... Color Red 2. For Optical 3. Good quality 4. 200nm to 2500nm spectral rang of a full rang of filter color ... filters are: UV Filter, Red Filter, Yellow Filter, Green filter, Orange filter, Violet Filter, Blue Filter, Infrared Filter, Sky-light filter, Neutral Grey Filter,etc.Mainly ... it can also access to particular artistic effect.Optical filter size 1.25", 2" etc.We can design and ...