The Heliopan 77mm UV SH-PMC Filter is not only an excellent filter for visually improving images made with either digital camera or shot on film, but it can always stay on the lens to protect the lens from fingerprints, dust, and moisture.
The lens absorbs the short wave portion of the spectrum so in hazy conditions a better image of the scene is possible. Loss of sharpness from ultraviolet rays and the blue tones common in infinity scenes are eliminated.
No exposure correction is necessary.
Features a matte black finish over a brass construction.