NSL Photography's™ Glossary of Photographic Terms - U

Choose your Glossary page by letter:
# A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z

UD
Ultra Low dispersion lens, pls refer to ED, LD sections.

Ultra-wide angle lens
Extra wide angle lens are those with an angle of view greater than 90°. For 35 mm cameras the description usually applies to lenses of shorter focal length than about 24 mm.

Underexposure
A condition in which too little light reaches the film, producing a thin negative, dark slide, dark image, or muddy-looking print.

Unipod (Monopod)
A one-legged support used to hold the camera steady.

UV
The ultra violet light. This is beyond the visible spectrum i.e. it's invisible electromagnetic radiation of the sunlight.

If you have any suggested additions or corrections to the Glossary, please contact us.