At crater V107 noticed that friendly (storch) and enemy (110) icons and ranges fade out to be almost unreadable at around 900-1500 and again around 200-300. View of plane remains clear. Location on screen doesn't seem to matter. I observed this from both a wirble and M8. At other ranges they were clear and sharp.
While firing at troops M8 machine gun tracers did not show at all and hit sprites were very small.