Scav07 Calamitous Zone Reshade addon - S.T.A.L.K.E.R. Anomaly mod for S.T.A.L.K.E.R.: Call of Pripyat
Calamitous Zone ReShade is a Lite Dark Atmosphere that blends in together with Grass Tweak mod from Fabio Conte Aydin in GAMMA MO, Set on winter grass and trees to give that dead zone wasteland look along with using GTR/GTR Optimized Textures.
Source: moddb.com