Term - Photo electric cell
|Photo electric cell||SWPP Photographic Glossary|
Sunday 9th August 2020
Photo electric cell
The light sensitive cell. Two types are used in exposure meters. A selenium cell generates electricity in proportion to the amount of light falling upon its surface. A cadmium sulfide cell offers a resistance to a small electric charge when light falls upon it. Cadmium sulfide cells are more sensitive then selenium, especially at low light levels.
Information provided by: SWPP