At very close to your point of view, the difference is very small. It's really only a few pixels by my measurment. However, at longer ranges where the bogey is, that difference becomes magnified a bit. Still, your not really doing this to expand your range of vision, but to change the angle a bit. Have a look:
The difference is perspective. Although the distance between the cowling and the pipper is the same, your point of view has changed. That space below the pipper lets you see farther below your flight path than the default position. You don't pull any more or less lead, your bullets still follow the same path. The difference is that your line of sight is higher so you can pull slightly more lead on your target and still see him.
If you want to really see the difference, take a plane up offline and shoot at drones. First move your head position all the way up. Your aim point will be far above your sight at this point, but it's irrelevent. As you line up behind a drone, throw a few shots at him and notice how high up your screen he is, how much space you can see below him. Now use PageDown to adjust your head position very low, so that you can just barely see your tracers. Notice that if you pull any lead at all in this condition, you can't see your target.
All raising your sight does is move your target up the windscreen, so that your viewing angle lets you see farther below your flight path. You see the same amount of space, you just end up looking forward at a slightly lower angle. The end result is that you can pull more lead and still see your target. It's a small thing, but it helps me make those tracking shots where I'm pulling a couple of G's and leading the target. Granted it's a very small advantage, but one I find usefull
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Sean "Lephturn" Conrad - Aces High Chief Trainer
A proud member of the mighty Flying Pigs
http://www.flyingpigs.com Check out
Lephturn's Aerodrome for AH articles and training info!
[This message has been edited by Lephturn (edited 05-12-2001).]
[This message has been edited by Lephturn (edited 05-12-2001).]