Term - Lens speed

Lens speed SWPP Photographic Glossary

Wednesday 25th December 2024  

Schools Processing Laboratory



SWPP

Glossary
 

Image Competition
Free entry for SWPP members.

Membership
Free Information Pack

Qualifications - An Overview

Lens speed

The largest lens opening (smallest f number) at which a lens can be set. A fast lens transmits more light and has a larger opening than a slow lens. Determined by the maximum aperture of the lens in relation to its focal length. The speed of a lens is relative to it's focal length. A 400 mm lens with a maximum aperture of f/3.5 is considered extremely fast, while a 28mm f/3.5 lens is thought to be relatively slow.



 

Information provided by: SWPP
More Photographic Terms

Contact SWPP

Reviews

The Society of Photographers Excellent TrustPilot

The Society of Photographers 4.9 stars

Update cookies preferences