Useful CCTV definitions (Helpful for understanding Spec sheets)

Useful CCTV definitions (Helpful for understanding Spec sheets)

Click on a 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



F

Field: Half of a TV frame. Composed entirely of odd or even lines.


F-number: Ratio of maximum iris opening in lenses with adjustable irises.


Focal length: Distance between the center of a lens and the main focus point.


Frame: A group of 2 fields, one comprised of even lines and one comprised of odd lines.