Term - Rack and pinion focusing
|Rack and pinion focusing||SWPP Photographic Glossary|
Sunday 11th December 2016
Rack and pinion focusing
A mechanical focusing system used on copying or monorail cameras. A pinion engages a rack on a slide. Focusing is achieved by turning a knob or wheel, which moves the lens or image panel.
Information provided by: SWPP
SWPP, 6 Bath St, Rhyl, LL18 3EB