Camera settings (to remove snow effect):
In HKEY_LOCAL_MACHINE/SOFTWARE/HTC/Camera/AppDefSettings/General
Set Contrast - 5, Brightness - 6, Saturation - 3, Hue - 5,Sharpness - 3

These settings will not reset themselves after closing the camera app or doing a soft reset! They become defaults.

Hope you find it useful!

-Ovo sam nasao na xda developers forumu, kazu da pomaze, a ja nemogu da nađem "HKEY_LOCAL_MACHINE" folder, nadam se da cete vi naci i da radi.