The better_lighting_depth_of_field_and_fps.7z file you have requested: Clear Sky / Mods / Better Lighting, Depth of Field and FPS - 11.35mb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R.: Clear Sky and upload any files you want to share or are missing. This is the only information we could locate:
'Better Lighting, Depth of Field and FPS' v1.0.Enhances Lighting, Depth of Field Blur and keeps Framerate at very playable levels, (if you have a decent graphics card- an ATI 3870 or 8800gt or equivalent).