[ GLOSSARY DEFINITION ]
Camera
Focal Length
The lens's optical distance in mm; wide (13mm) = wide angle, long (85mm+) = zoom.
Full Definition & Technical Explanation
Focal length describes lens field of view. Short focal lengths like 13 mm are ultrawide; 26 mm is the standard main lens; 85 mm+ is telephoto. See Focal length per camera lens.
It affects composition and distortion. Combined with zoom optics it determines reach.
Where Focal Length Matters
Smartphones
Frequently Asked Questions
What is Focal Length?
The lens's optical distance in mm; wide (13mm) = wide angle, long (85mm+) = zoom.
What terms are related to Focal Length?
Related Camera terms include Ultrawide Lens, Telephoto Lens, Camera Zoom.