I saw a video to put nano vision clear. this video
http://www.youtube.com/watch?v=KYvzzMW3M5I&feature=related. min 5.50.

And i try tu post --

r_NightVisionBrightLevel = 0
r_NightVisionCamMovNoiseAmount = 0
r_NightVisionCamMovNoiseBlendSpeed = 0

in the folder outoexec i creat but when i paste the configuration. i cant becouse appers a thhing like this... autoexec.cfg alredy exists.want to replace it. and I choose YES.
And **** appears a message saying - access denied! why!

PLEASE HELP ME.
AND BY SORRY MY BAD ENGLISH.

Nothing to do with Crysis. Check your permissions.