UV filter to provide basic reduction of ultraviolet light and a protector for your lens
CPL filter to reduce glare and reflections from non
-metallic surfaces, deepen intensity of the blue sky
FLD filter to provide color correction when shooting under fluorescent lighting
These Filters are manufactured from high quality solid optical glass
Each individual filter is heat treated to avoid any rare movement or distortion
The rings are double
-threaded, so you can stack filters as needed, and you can even put your lens cap on over the filters