The UV or Haze filter is not only an excellent filter for visually improving
images on both digital and film but it can always stay on the lens to protect it
from fingerprints, dust, moisture, etc. It absorbs the short wave portion of the
spectrum so in hazy conditions a better image of the scene is possible. Loss of
sharpness from UV Rays and the blue tones common in infinity scenes are
eliminated. No exposure correction is needed.