V 3.0: Lens flares & dirt, visor reflections / water droplets, god rays, depth of field, night & thermal vision scopes, dynamic wet surfaces with reflections, rainbows, volumetric light & fog, colored speculars and many other effects.
The just released Shoc Weather Total Conversion Mod 1.0 (available on AMK forums) includes the Dynamic Depth of Field Shaders. See Amk-team.ru