Tracers Rounds (From SimHQ)

[Erkki]

I dont think the "shutter speed" improves. But pupil lets in more light.

But yeah, in dark enough all light "burns in" your eye for some time... But it didnt happen, to me, with the tracers. Wasnt all pitch black though, but the perfectly clear star sky(edit, all 3 times actually). The tracers are bright but not that bright, and they're gone quick anyways.