| Film, as well as video, often exhibits a
greater sensitivity to what is to us invisible, ultraviolet
light. This is most often outdoors, especially at high
altitudes, where the UV-absorbing atmosphere is thinner;
and over long distances, such as marine scenes. It can
show up as a bluish color cast with color film, or it
can cause a low-contrast haze that diminishes details,
especially when viewing far-away objects, in either color
or black-and-white. Ultraviolet filters absorb UV light
generally without affecting light in the visible region. |
