God rays, dynamic depth of field, night vision scopes & binoc, thermal/infrared scopes, rainbows, dynamic wet surfaces with reflections, and many other effects. SECOND PATCH RELEASED.
Due to public demand I made the night vision effect apply on the binocular as well (can be disabled though).
On this short vid you see the binoc in action with a green NV at medium brightness.
Color, brightness, contrast, and light sensitivity are configurable.