Photography cheat sheet: what are circles of confusion?

circles of confusion
(Image credit: Future)

Circles of confusion in photography are aptly named, and if you're not sure what the term actually means, you're not alone! We'll try to explain the concept simply, as well as how it relates to depth of field.

According to Wikipedia, when we're thinking about optics, "a circle of confusion is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source."

Thank you for reading 5 articles this month* Join now for unlimited access

Enjoy your first month for just £1 / $1 / €1

*Read 5 free articles per month without a subscription

Join now for unlimited access

Try first month for just £1 / $1 / €1

N-Photo

N-Photo: The Nikon Magazine is a monthly publication that's entirely dedicated to Nikon users. As a 100% independent magazine, you can be assured of unbiased opinion from a trustworthy team of devoted photography experts including editor Adam Waring and Deputy Editor Mike Harris

Aimed at all users, from camera newcomers to working pros, every issue is packed with practical, Nikon-specific advice for taking better photos, in-depth reviews of Nikon-compatible gear, and inspiring projects and exciting video lessons for mastering camera, lens and Photoshop techniques.

Written by Nikon users for Nikon users, N-Photo is your one-stop shop for everything to do with cameras, lenses, tripods, bags, tips, tricks and techniques to get the most out of your photography.