Term - Inverse square law

Inverse square lawSWPP Photographic Glossary

Saturday 2nd December 2023  

Join The Fastest Growing Worldwide Association for Serious Photographers



SWPP

Glossary
 

Image Competition
Free entry for SWPP members.

Membership
Free Information Pack

Qualifications - An Overview

Inverse square law

A simple mathematical law thatís usually complicated by its description. The law states that light projected onto a surface is inversely proportional to the square of its distance from the source! See what I mean? Basically if you shine a light on a subject and then move it to twice the distance the subject will receive a quarter of the intensity. Similarly when you half the distance the intensity is multiplied by four.



 

Information provided by: SWPP
More Photographic Terms

Contact SWPP

The Society of Photographers Excellent TrustPilot

Update cookies preferences