Aces High Bulletin Board
General Forums => Hardware and Software => Topic started by: Vraciu on December 07, 2016, 03:07:51 PM
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Do any of these actually work?
I put one on my monitor and I don't know how to prove it is working. Based on the site below I wasted my money.
https://blueblockglasses.com/blogs/news/the-rgb-color-model-test-how-effective-is-your-blue-light-filter-eyewear
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I had to giggle a bit when reading that.
You want to get rid of the blue hue? Switch the fluorescent light bulbs from the standard bulb hue bulbs to the daylight bulb, or better, swap them for LED based lights. Be sure the color temperature is around 6500K.
If you are not under fluorescent bulbs, then check the color temp of the artificial lighting you are using. Most incandescent bulbs run between 2400K and 3000K, which adds a bit of red/yellow to the color of its surroundings.
You want more help? Calibrate your monitor to a color temperature of 6500K.
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why would you want to block blue?
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why would you want to block blue?
http://www.health.harvard.edu/staying-healthy/blue-light-has-a-dark-side
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I had to giggle a bit when reading that.
You want to get rid of the blue hue? Switch the fluorescent light bulbs from the standard bulb hue bulbs to the daylight bulb, or better, swap them for LED based lights. Be sure the color temperature is around 6500K.
If you are not under fluorescent bulbs, then check the color temp of the artificial lighting you are using. Most incandescent bulbs run between 2400K and 3000K, which adds a bit of red/yellow to the color of its surroundings.
You want more help? Calibrate your monitor to a color temperature of 6500K.
I use incandescent bulbs in my house. That's not my concern.
I am worried about hours and hours and hours of blue light from my monitor smashing into my retina.
Does that monitor calibration trick actually help?
Think I will send this thing back and see if I can get some glasses that will reduce it.
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http://www.health.harvard.edu/staying-healthy/blue-light-has-a-dark-side
That along with Macular Degeneration and nearsightedness. Your eye tries to protect itself from blue light by backing the retina away from it, inducing myopia.
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If your monitor temperature is over 9000K, which most default to higher than that, then your entire monitor is cranking our more blue light that it should. Much more.
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If your monitor temperature is over 9000K, which most default to higher than that, then your entire monitor is cranking our more blue light that it should. Much more.
I will check that out. Thanks. :salute
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Still want input on these monitor overlay filters. Wish I could find one that I KNOW works.
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I've worked for companies selling monitor filters. Back in the day it was about avoiding particles shot by static electricity to land on your eyeballs. The more scientific-ish argument was allergy for electricity which was impossible to find in medical tests. The major benefit may have been improved contrast on aging tubes plus some added privacy if the filter featured side view block. But they sold well and people really liked them and thought they worked. Was it because they worked as promised or because people believed in them, who can tell?
These blue filters make me doubt, since some laptops now have a small program to do change from blue to a warmer hue. Why use an external filter if it's a settings thing?
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I use f.lux, helps at night. It automatically takes the blue out at night (or whenever you want it to really).
https://justgetflux.com/
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http://www.health.harvard.edu/staying-healthy/blue-light-has-a-dark-side
That study is hogwash. They list the activities that cause the issue, and then blame the light. That actually passes as science these days.
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I use f.lux, helps at night. It automatically takes the blue out at night (or whenever you want it to really).
https://justgetflux.com/
I use that also. Unfortunately, when I play AH, which is 90% of my computer usage, it disables that software.
I need a non-software solution. Glasses can be filtered for UV pretty easily. Blue light seems to be a tougher nut to crack.
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As Skuzzy said, change your monitor settings to a warmer temperature. That's what the software solutions do anyway. And since you do the setting using the buttons of your monitor, it won't get disabled for AH3.
Also, it's surprisingly easy to get used to a new colour temp. Since you have nothing to compare with, you'll soon think that yours is as accurate as possible.
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As Skuzzy said, change your monitor settings to a warmer temperature. That's what the software solutions do anyway. And since you do the setting using the buttons of your monitor, it won't get disabled for AH3.
Also, it's surprisingly easy to get used to a new colour temp. Since you have nothing to compare with, you'll soon think that yours is as accurate as possible.
I need to be able to disable it easily. Not sure my monitor can do that at the click of a button. I will try though.
Is there not an actual screen filter that I can prove blocks blue light? One that is made by a reputable manufacturer?
Without some way to measure it I don't have much faith in any "solution". Just turning down my monitor to something warmer isn't going to achieve what I want, which is actually eliminating/reducing the amount of blue light hitting my eyes, is it?
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Yes, changing the color temperature will reduce the blue. The lower the number the more the color shifts towards red, from blue. 6500K is considered the most accurate color temperature for computer monitors.
Google "color temperature" and read about it. You will find full graphs showing how the color temperature impacts the output color of the monitor, as it pertains to the temperature of the display.
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Yes, changing the color temperature will reduce the blue. The lower the number the more the color shifts towards red, from blue. 6500K is considered the most accurate color temperature for computer monitors.
Google "color temperature" and read about it. You will find full graphs showing how the color temperature impacts the output color of the monitor, as it pertains to the temperature of the display.
So that's literally what hits my eyes?
Okay. I will check it out.
Meanwhile....something like this is garbage, eh?
https://www.amazon.com/PYEPYD-Monitors-Diagonal-Hazardous-Blue-Light/dp/B01CZSY1C2/ref=sr_1_1?ie=UTF8&qid=1481227323&sr=8-1&keywords=blue+light+monitor+filter+24
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If you can change that setting, lower is a more yellow or warmer shade where higher is bluer and cooler. This is a factor in photography where you'd want a proper white balance setting for the appropriate ambient light otherwise white won't be quite white skewing the other colors too. On a monitor you couldn't very well remove blue entirely as the monitors are RGB (red, green, bkue) and without blue they couldn't reproduce colors.
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If you can change that setting, lower is a more yellow or warmer shade where higher is bluer and cooler. This is a factor in photography where you'd want a proper white balance setting for the appropriate ambient light otherwise white won't be quite white skewing the other colors too. On a monitor you couldn't very well remove blue entirely as the monitors are RGB (red, green, bkue) and without blue they couldn't reproduce colors.
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So, when people have blue light filtering glasses that look clear they're actually only REDUCING the blue light?
I remember blue blockers back in the 90s where everything appears yellow. I am definitely not chasing THAT effect. Ha ha.
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So, when people have blue light filtering glasses that look clear they're actually only REDUCING the blue light?
I remember blue blockers back in the 90s where everything appears yellow. I am definitely not chasing THAT effect. Ha ha.
Correct. Reducing certain wavelengths of the blue light band.
I don't know if the blue blocker sunglasses actually blocked the blue or if it was just a yellow lense - - but the world was a yellow place looking through them.
An easy way to see what I'm talking about is to go to any home center these days. There's usually a display of the light bulbs that show the different color of the bulbs measured by the Kelvin scale. They're not all just plain white! 2700K is soft white. It's warmer and more yellow than a 5000k daylight bulb which is a bit brighter looking but much bluer even though they may be the same wattage bulb. You'd probably use the soft white bulbs in a lamp in your living room but a daylight in your laundry room. It's a personal preference.
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That study is hogwash. They list the activities that cause the issue, and then blame the light. That actually passes as science these days.
I wasn't advocating it, I was answering a question with it.
Amazon has a blue filter on some of their fire tablets to help people sleep after reading. It's a popular concept.
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I wasn't advocating it, I was answering a question with it.
Amazon has a blue filter on some of their fire tablets to help people sleep after reading. It's a popular concept.
I use that setting on my iPad 24/7.
I am not worried about sleep patterns but rather my eyes. My eye guy is the best in the business. Blue light from all these lights and devices is bad stuff. So, anything I can do to avoid AMD or glasses...
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I wasn't advocating it, I was answering a question with it.
Amazon has a blue filter on some of their fire tablets to help people sleep after reading. It's a popular concept.
I use an app called lux on my phone that adjusts the brightness of the screen relative to the ambient light. Saves on battery power as the screen consumes most of your juice. There's a blue filter that you can configure to come on at certain times of the evening. The idea is to help with sleeping. Blue light signals the body to wake up so you can reduce exposure to it in the hours prior to bed time with the filter.
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So, how valid is THIS test?
About halfway down the page....side by side images.
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Check your monitor's Color setting or Color Temperature setting menu. On mine it has a User Color Temperature setting but it isn't really a color temperature at all, it just allows me to turn the R or G or B channels down from 100% to as low as 0%. So, for example, I can completely remove blue light by turning the Blue channel to 0%. This sounds like what you want, but I'm not sure you understand the ramifications. With Blue set at 0% there is no blue light emitted, but this page, which should have a white background, ends up being a ridiculous bright yellow (which is what you get from a mixture of Red and Green with no Blue). The game would look silly without balanced colors. Is that really what you want? In other words it is, by definition, impossible to have proper color rendition while also blocking all the blue light.
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I want to reduce potential eye damage from blue light. Blocking UV is easy. If I could,achieve similar results with a filter I would be ecstatic. I presume some wavelengths of blue are worse than others so limiting the worst parts of the spectrum would be nice.
I know what you mean about the blue. My iPad is hued yellow with filtering enabled.
I was under the impression that LED monitors emit much more intense blue light than previous technologies...
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You do realize that blue light is everywhere? It's also true that significant amount of HEV blue light is good for treating seasonal affective disorder. If you live up north that might be important to you.
Fighting blue light by covering your eyes is like using hand sanitizer to protect your respiratory system.
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UV is not part of the visible spectrum of light and is also not emitted by any LCD monitor, regardless of the backlighting.
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You do realize that blue light is everywhere? It's also true that significant amount of HEV blue light is good for treating seasonal affective disorder. If you live up north that might be important to you.
Fighting blue light by covering your eyes is like using hand sanitizer to protect your respiratory system.
And pounding your eyes with artificial blue light on top of what's already out there is not good for them.
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UV is not part of the visible spectrum of light and is also not emitted by any LCD monitor, regardless of the backlighting.
Ah. Not being a smart bellybutton here or anything, but I guess people writing these articles claiming monitors emit UV are misinformed?
I spend hours staring at AH-related stuff, iPads, smartphones, glass cockpit displays, etc.. Don't wanna' be blind as a bat when I hang it up. :D
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Lol, this was interesting. Love it when he goes off on the acrylic monitor shield.
https://m.youtube.com/watch?v=OM0sBgVSSgs
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Blue light?
I'm guessing that most don't realize that CRTs
generated soft Xrays... way more dangerous than
blue light
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Blue light?
I'm guessing that most don't realize that CRTs
generated soft Xrays... way more dangerous than
blue light
For going blind?
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Vraciu, calm down. I just saw an article about monitors and eyesight. It said that watching a monitor too much won't make you blind but it will make your eyes dry and cause nearsightedness.
There's a whole lot of misinformation in the world today, for a big part because of the Internet. For example there's a hoax running that Finland doesn't exist, the area here is just a sea between Sweden and Russia where Japanese fishing fleet are harvesting seafood to be transported by train through Siberia to the Far East. Oh, actually that's true. In reality I'm not the naked guy lying on a blanket on a frozen beach, I'm a blue whale.
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Finland doesn't exist, the area here is just a sea between Sweden and Russia where Japanese fishing fleet are harvesting seafood to be transported by train through Siberia to the Far East.
Just had to edit your post so I can get busy sharing it.
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Vraciu, calm down. I just saw an article about monitors and eyesight. It said that watching a monitor too much won't make you blind but it will make your eyes dry and cause nearsightedness.
There's a whole lot of misinformation in the world today, for a big part because of the Internet. For example there's a hoax running that Finland doesn't exist, the area here is just a sea between Sweden and Russia where Japanese fishing fleet are harvesting seafood to be transported by train through Siberia to the Far East. Oh, actually that's true. In reality I'm not the naked guy lying on a blanket on a frozen beach, I'm a blue whale.
The data suggests otherwise. In a couple decades we will find out for sure.
No good can come of bombarding your eyes with blue light. If my doc says so I believe him. He has been dialed into this stuff for decades and knows his stuff.
So my original question remains. Are there any effective blue light shields for monitors or is it a scam?
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Oh, I'm not saying that blue light wasn't harmful, my last comment was for your reaction to the X-rays.
As for blue light, adjusting your monitor colour temperature will work as good as the filters. If you have lots of blue light sources around you, then filtering glasses are the way to go.
Are the filters scam or not? Well, if they work they aren't but IMO it's like having so many lamps on that you'd have to wear sunglasses inside.
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I had so many x-rays as a kid that the point is moot. They didn't realize they were bad for you and I wound up landing on my head regularly. That explains a few things, eh? :rofl
If settings adjustment works I will be glad for that. Still prefer something to put in front of the screen.
If f-lux would stay enabled while playing AH that would be a start.
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You really don't want to adjust the color temperature in the On Screen Display of your monitor , do you? Or doesn't your monitor feature the settings? Mine doesn't in spite/because of having been quite expensive at the time.
Now that people have grown aware of the negative side effects of too much blue light, companies like f-lux see some marketing potential. F-lux says it's free, but they have the donate button for those who'd like to support their work. If every tenth user sends five bucks, the programmers will get well paid for.
Since you know how your monitor looks like with f-lux enabled, you might try the built in color calibration tool in Windows for the same effect. This tutorial tells how to do it in Windows 10: http://www.windowscentral.com/how-calibrate-your-pcs-monitor-windows-10 (http://www.windowscentral.com/how-calibrate-your-pcs-monitor-windows-10). I suppose the same works for Win 8/8.1, too. In Win 7 it's in the side panel Control Panel/Monitor, or you can use the search bar in the Start menu for "calibrate color". The application itself is the same in all versions. #14 in the tutorial is where you can reduce the amount of blue as much as you wish. And those settings will stay until you change them.
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You really don't want to adjust the color temperature in the On Screen Display of your monitor , do you? Or doesn't your monitor feature the settings? Mine doesn't in spite/because of having been quite expensive at the time.
Now that people have grown aware of the negative side effects of too much blue light, companies like f-lux see some marketing potential. F-lux says it's free, but they have the donate button for those who'd like to support their work. If every tenth user sends five bucks, the programmers will get well paid for.
Since you know how your monitor looks like with f-lux enabled, you might try the built in color calibration tool in Windows for the same effect. This tutorial tells how to do it in Windows 10: http://www.windowscentral.com/how-calibrate-your-pcs-monitor-windows-10 (http://www.windowscentral.com/how-calibrate-your-pcs-monitor-windows-10). I suppose the same works for Win 8/8.1, too. In Win 7 it's in the side panel Control Panel/Monitor, or you can use the search bar in the Start menu for "calibrate color". The application itself is the same in all versions. #14 in the tutorial is where you can reduce the amount of blue as much as you wish. And those settings will stay until you change them.
I can try it.
The one thing I like about f-lux is I can turn it off for short periods when working on skins. A permanent monitor adjustment will screw that up.
Also, if I have a filter I KNOW is blocking the stuff then I have faith in it empirically. The stuff isn't getting through. Monitor adjustments don't give me the same confidence. It's a matter of seeing is believing I guess.
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A matter of seeing is believing indeed.
How much do you remember of the color studies back in school? I mean colours and complementary colours (https://en.wikipedia.org/wiki/Complementary_colors)? Yellow is the opposite of blue in the RGB system used for coloured lights, and since you can't stretch the imaginary pole between the opposites, adding yellow will reduce blue. Logically, reducing blue will add yellow. So what you see is what you get.
If you're worried about materials, i.e. glass vs. plastic, just think about the cheap cardboard 3D glasses with the thin plastic film lenses (anaglyph 3D). If that kind of material can block half of the information off, I'd call that sufficient by a margin. A yellow overhead film on your screen would cut the corresponding blue entirely. The intensity of yellow determines how much blue will be cut off. You can test that by looking at a blue sky image through a flat bottle containing some yellow liquid. Dilute that with water to see the green sky turn bluer by every drop.
Even blue light is just light, subject to the laws of colours and optics and electromagnetic radiation. There's no magic involved. Again, what you see is what you get.
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I just figure that if you overpower the blue with something else you're still getting the blue--you're just getting more of the rest, too.
Good info all around. My thanks.
Now to find my white whale--a screen filter I can believe in.
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Umm... No.
If you try to overpower the blue with yellow, the blue has to give way. That's the law. The only thing you can get "more" is brightness and speaking of monitors there's a dedicated setting for it. A set level of brightness doesn't change, only the proportions of different colours do.
Think about a jar full of liquid. Liquids don't give up, you can't compress them. If you want to add something into the jar, something else has to come out. Adding yellow liquid to a jar full of blue liquid will make the blue liquid flow over the rim. The amount of blue will diminish. The more yellow you add the less blue you can have in the jar - or in your monitor. No matter how saturated the colours are, adding one will deduct the counterpart.
Believe your eyes. What you see is what you get.
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Umm... No.
If you try to overpower the blue with yellow, the blue has to give way. That's the law. The only thing you can get "more" is brightness and speaking of monitors there's a dedicated setting for it. A set level of brightness doesn't change, only the proportions of different colours do.
Think about a jar full of liquid. Liquids don't give up, you can't compress them. If you want to add something into the jar, something else has to come out. Adding yellow liquid to a jar full of blue liquid will make the blue liquid flow over the rim. The amount of blue will diminish. The more yellow you add the less blue you can have in the jar - or in your monitor. No matter how saturated the colours are, adding one will deduct the counterpart.
Believe your eyes. What you see is what you get.
Fair enough, man. Thanks for the reassurance. I tend to be too skeptical sometimes. :salute
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Is adjusting my monitor going to reduce the non-visible stuff also?
http://www.archlighting.com/technology/blue-light-hazard-and-leds-fact-or-fiction_o
https://static1.squarespace.com/static/540b6590e4b029a48855471d/t/5428c55ee4b02ef84b7d9c2e/1411958124481/Blue+Light+HEV.png?format=2500w
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I use a program called Flux to automatically change the color of my monitors once the sun goes down. It makes the monitors easier to look at during the night. It works based on geographic location and can be disabled if needed. The blue light coming off your monitor isn't bad for your eyes necessarily but it does trick your brain into thinking it's daytime.
You will just need to install the software and tell it where you are in the world. Once it starts adjusting the monitor you just have to adjust the color output to match the lights of your room. It's very simple and once you're done then it works by itself each day automatically.
https://justgetflux.com/
I would also suggest swapping out your bulbs for LEDs as they burn out. The energy savings is amazing once you have enough! Just make sure you get the right color temperature.
http://www.westinghouselighting.com/color-temperature.aspx
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I use a program called Flux to automatically change the color of my monitors once the sun goes down. It makes the monitors easier to look at during the night. It works based on geographic location and can be disabled if needed. The blue light coming off your monitor isn't bad for your eyes necessarily but it does trick your brain into thinking it's daytime.
You will just need to install the software and tell it where you are in the world. Once it starts adjusting the monitor you just have to adjust the color output to match the lights of your room. It's very simple and once you're done then it works by itself each day automatically.
https://justgetflux.com/
I would also suggest swapping out your bulbs for LEDs as they burn out. The energy savings is amazing once you have enough! Just make sure you get the right color temperature.
http://www.westinghouselighting.com/color-temperature.aspx
I run that software and love it. Downside is it is disabled by AH when I start the game. Boo.
As for LEDs that's precisely what I do NOT want in my house. I am trying to reduce blue light not increase it. I have a stockpile of incandescent bulbs I guard with my life. I am not a fan of LED or fluorescent. Can't stand them.
But your reply is appreciated. :salute
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Adjusting your monitor reduces everything that has an opposite colour. And every colour has one, even those you can't see. So, since there's only three colour sliders in the Windows calibration tool, reducing blue will reduce every shade of it.
As stated in the archlighting link, viewing directly a concentrated directional light (of a diode) can be unpleasant but doesn't pose a risk at a normal brightness level. Plus the light is most often ambient, you aren't supposed to look directly at any kind of light bulb anyway.
Reducing brightness along with the blues isn't a bad idea, it will further reduce the effect of the remaining blue light.
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Got it. (I think.)
I still despise anything that isn't natural or incandescent. I have never liked fluorescent but my aversion has increased with age. LEDs seem to compound the problem.
Funny though, when I transitioned from a glass cockpit (same airplane make and model) that had CRTs to one that has LEDs I noticed I can't see the screens as well through sunglasses. Without a side-by-side comparison I don't know if that's a brightness issue or a filtering one.
:headscratch:
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Are you saying that you're wearing sunglasses while playing or are you talking about real planes? Sunglasses can have issues with any lights, especially polarized ones.
If you're comparing monitors, there's quite a many variables. LED vs. fluorescent is obvious, within LEDs there's both backlit and side lit models. Plus the various panel types, TN, VA, IPS etc.
Fluorescent has been around for quite some time, LEDs are starting to be up to the task. LEDs are my favourite, they don't flicker like fluorescents and their energy consumption is low. I must admit that I like the warm glow of the traditional bulbs, so when buying new lamps I take the warmest white I can find. The first LEDs I bought were blue as Inuit hell and so dim I couldn't see a thing. The ones I now have cause neither insomnia nor migraine. YMMV.
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LED bulbs come in a multitude of colors also. I'm not talking about red or green or blue. I'm taking about the color temp, the rating in degrees Kelvin. I believe the wifi enabled ones you could literally make any actual color you like.
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LED bulbs come in a multitude of colors also. I'm not talking about red or green or blue. I'm taking about the color temp, the rating in degrees Kelvin. I believe the wifi enabled ones you could literally make any actual color you like.
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Wifi-enabled? That's wild. Hehehe never heard of that.
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Are you saying that you're wearing sunglasses while playing or are you talking about real planes? Sunglasses can have issues with any lights, especially polarized ones.
If you're comparing monitors, there's quite a many variables. LED vs. fluorescent is obvious, within LEDs there's both backlit and side lit models. Plus the various panel types, TN, VA, IPS etc.
Fluorescent has been around for quite some time, LEDs are starting to be up to the task. LEDs are my favourite, they don't flicker like fluorescents and their energy consumption is low. I must admit that I like the warm glow of the traditional bulbs, so when buying new lamps I take the warmest white I can find. The first LEDs I bought were blue as Inuit hell and so dim I couldn't see a thing. The ones I now have cause neither insomnia nor migraine. YMMV.
Real planes. Real screens. Non-polarized (you can't see as well through the windscreen with polarized lenses).
I like my fluorescents. I will be doing lots of bulb replacing when my new house gets built. Lol!
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Rgr, I just wanted to make sure since we've been discussing monitors so far. A passenger pilot once told me about polarized lenses not being suitable for flying for the very reason you said. I've also noticed that polarized lenses and lcd panels don't mix, tilting your head makes the displays go black. For what I've noticed and heard from my car repair man, universal LED panel lights are available but they don't last long possibly because of the large variation in the current. LEDs being very directional is another factor why they don't automatically fit as a replacement for an omni-directional bulb or tube.
By the way, there's a lot of blue light outside and people have lived happily with it since the days of Adam and Eve. So the main issue with it is that viewing a blue-ish screen after dark is actually prolonging daylight and fooling your system to be active instead of preparing for sleep. Actually, for what I've noticed, a clear morning seems to be bluer than the evening, possibly affecting our wake up mood. Reciprocally, an orange sunset calms us down. Sitting at a fire in the dark is very meditative as you probably know... Those are the light conditions the caveman within us is accustomed to and altering their rhythm will cause issues.
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I had so many x-rays as a kid that the point is moot. They didn't realize they were bad for you and I wound up landing on my head regularly. That explains a few things, eh? :rofl
If settings adjustment works I will be glad for that. Still prefer something to put in front of the screen.
If f-lux would stay enabled while playing AH that would be a start.
Before the strokes I spent 33 yrs as a field engineer installing, servicing cancer therapy systems, diagnostic X-ray, CT and MRI :aok
I'm guessing I made it through those years without any appreciable damage :banana:
Oh wait... the strokes :noid
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You could always try amber shooting lenses or blue blockers. Below is from a study about sleep disorders due to blue light and outcomes tested wearing amber lenses. I've worn amber shooting lenses instead of upping the gamma for low light conditions in AH2 which helped seeing the cons in ground clutter.
https://www.ncbi.nlm.nih.gov/pubmed/20030543
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I use f.lux, helps at night. It automatically takes the blue out at night (or whenever you want it to really).
https://justgetflux.com/
great app! Also works with games
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great app! Also works with games
Doesn't work with AH3.
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Rgr, I just wanted to make sure since we've been discussing monitors so far. A passenger pilot once told me about polarized lenses not being suitable for flying for the very reason you said. I've also noticed that polarized lenses and lcd panels don't mix, tilting your head makes the displays go black. For what I've noticed and heard from my car repair man, universal LED panel lights are available but they don't last long possibly because of the large variation in the current. LEDs being very directional is another factor why they don't automatically fit as a replacement for an omni-directional bulb or tube.
By the way, there's a lot of blue light outside and people have lived happily with it since the days of Adam and Eve. So the main issue with it is that viewing a blue-ish screen after dark is actually prolonging daylight and fooling your system to be active instead of preparing for sleep. Actually, for what I've noticed, a clear morning seems to be bluer than the evening, possibly affecting our wake up mood. Reciprocally, an orange sunset calms us down. Sitting at a fire in the dark is very meditative as you probably know... Those are the light conditions the caveman within us is accustomed to and altering their rhythm will cause issues.
Natural blue light is one thing. Artificial blue light, especially with the intensity of LEDs is a threat to your vision.
We don't stare at blue light in nature anywhere close to the amount we do with PEDs, TVs, computer monitors, etc. Sleep rhythm is simply not a concern for me. Macular degeneration is.
'LED (or solid-state) lighting sources are designed to emit all energy within the wavelength range of human vision, making LEDs the most energy-efficient commercially manufactured light. However, many current “white-light” LED designs emit much more blue light than conventional lamps, which has a number of health implications...'
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You're right about the "white light" LEDs as well as in your comment about the amount of watching artificial blue light sources. Actually, now that I think about it, reviews praising smart phones, tablets and laptops for their brightness in daylight conditions suddenly got an alarming side tone. People staring at a handheld monitor outside on a sunny day must get more than their share of blue light.
Again, as I've said before, your eyes can measure the amount of blue light pretty well until they get accustomed to the bluer lighting conditions. As long as you have something to compare with like looking out of the window and back into your lit room you can tell differences in the colour temperature.
LED lighting has gone a long way from the very blue dim ones to the current options. A similar progression could be seen in fluorescent tubes several years earlier. Not knowing your age I can't guess if you're familiar with the industrial tubes used in warehouses. They really made your eyes hurt with their bright blue-ish white light! The good old light bulbs with a glowing filament has by nature the warmest colour, similar to candlelight.
Saving energy and resources is undoubtedly a good thing. In my opinion the energy saving fluorescent bulbs were an unnecessary side step from filaments to LEDs, but LED technology wasn't mature enough when they cancelled the production of light bulbs. The only ones that benefited from the energy saving lamps were their manufacturers, they mostly didn't last as long as promised and they have to be disposed in a hazardous waste facility.
There's two ways to change the colour temperature of a lamp. The simple one is to dip the lamp into dye, in the case of reducing blue light the dye should be yellowish. That's a perfectly working option. However, as you can imagine, any layer of colour will reduce efficiency, thus adding to power usage for a desired luminance. So, obviously the better way is to make the light sources produce the desired colour by nature. Fortunately for both our eyes and natural resources the LEDs have started reaching that point.
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The problem is that your eye gets acclimated to blue light by "backing away" from it. This results over time in myopia.
I have always hated fluorescent lights. They're obnoxious to a huge degree and LEDs are now worse.
Energy saving isn't as important to me as preserving my vision. Thus I am stuck trying to find the solution in a world that doesn't even notice the dangers.
The government mandating the extinction of fluorescent bulbs is an example of unintended consequences that may prove to offset the intended savings by a significant amount.
If the the door range on an LED is in the incandescent range does this mean the blue light is shielded somehow, by dye or some other mechanism? Can the blue spectrum of an LED be "turned off" in production or only masked?
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I understand your concern, there's macular degeneration in my family and I've started to visit the eye doctor annually. Blaming blue light being the sole reason for the increasing number of myopia is too simplified. Instead or at least alongside there's this constant trend of looking near so the eyes can't get their rest. You know what I mean? If you're not sitting at an arm's length of a monitor, you're staring at your smart phone or tablet. And aside of the electronic devices you're looking at papers on your desk in front of the monitor. The TV being a couple of yards away is the most distant object people now seem to watch. When was the last time you've spent a whole day looking at the horizon?
And yes, as far as I can understand if a LED has the same colour temperature than an incandescent light bulb the amount of blue is similar. It can be done in many ways starting from an external layer of yellow dye to building them to produce warmer light. Either way, the lower the colour temperature is the less blue light there is. There's no such thing as invisible blue light. If the light looks yellow/amber/orange, there's no room for blue.
For colour temperatures for different light sources, this might give you some advice:
(http://demandware.edgesuite.net/aagm_prd/on/demandware.static/-/Sites-Lumens-Library/default/dw83d92844/images/articles/warm-up-to-led/kelvin-chart.jpg)
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Excellent chart.
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Excellent chart.
Looked like one to me too. So now your main concern is to get the warmest white or 2700K LEDs to avoid the blues.
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I presume some wavelengths of blue are worse than others so limiting the worst parts of the spectrum would be nice.
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I was under the impression that LED monitors emit much more intense blue light than previous technologies...
You'll have to research and decide what wavelengths you consider bad and then try to find blue blocker sun glasses that block those wavelengths. I used my cheap spectroscope to measure my LCD monitor (almost certain it's not an LED backlight monitor). When showing pure blue the spectral light emitted is about 440 nm to 490 nm. (Note: 490 nm is not even blue, it's more blue-green.)
You can do the same with your monitor by purchasing a cheap spectroscope on Amazon. Search for "EISCO Premium Quantitative Spectroscope, +/- 5nm Accuracy": it's only $10. (Note if, like me, you have zero accommodation, i.e. no ability to focus except at one distance, then you might have to use reading glasses with this spectroscope: you have to be able to focus at 8".) If you have an LED backlight monitor the emission may be similar to mine as white LEDs are actually blue LEDs with a phosphor coating. According to the specs of one white LED I checked the blue part peaked at 460 nm with a range between about 440 nm and 480 nm.
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Sounds about right, guys. :salute
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My new Benq 2430t has this feature. From their site...
http://www.benq.com/product/monitor/XL2430T/features/
"Low Blue Light as Eye Safety Precautionary Measure
Practice long hours with clear, comfortable vision or compete with top-notch vision condition with BenQ’s new Low Blue Light. The blue spectrum light, which is produced by regular computer screens, is a critical cause of eye damage, eyestrain, headaches and sleeping disorders. Now with the offering of various adjustable low blue light levels, gamers can better protect their eyes. So there would be no need for yellow tinted eyeglasses for additional eye protection, and gameplay can be clear, comfortable and hassle-free!"
I use this feature for browsing and watching simple web content. Is this what you're referring to? I have not tried it in game yet.
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That would be nice. I don't have the funds for a new monitor right now though, so a screen filter is what I was after in the interim.
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The Windows 10 build for March "should" include an adjustment for blue light. It is included in the latest preview build ISO for insiders.
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Could it be ?
I might be optimistic here but since I installed Flux on my work laptop and home desktop *set at 5600 (going on 4 weeks) I haven't had any ocular migraines (previously 1 - 2 a week) I get the half round zig zag patterned obstructions in my vision followed by headaches usually at around my temples followed by a dull foggy head.
I use a dell laptop for work but a fairly new Asus 144hz for home
Could it be?
I need to thank someone!