In optics, the aperture of an optical system (including a system consisting of a single lens) is the hole or opening that primarily limits light propagated through the system. The aperture defines a bundle of …

In the video, I’ve discussed what aperture is, how it works, and every effect that aperture has in photography (including a few smaller effects beyond just exposure and depth of field).

Unravel the mysteries of aperture. Learn how to use this essential setting to capture striking photographs!

Aperture is a not-for-profit organization that connects audiences though photography—in print, in person, and online.

The meaning of APERTURE is an opening or open space : hole. How to use aperture in a sentence.

Jan 1, 2026 · Aperture is an adjustable opening inside your lens that allows light to pass through to the imaging sensor in the camera body. An easy way to visualize aperture is to think of it in terms of the …

Apr 28, 2024 · In the case of photography, the lens aperture is the opening through which light passes to enter the camera. You can restrict the amount of light by closing (or ‘ stopping down ‘) your aperture, …

Aperture controls the amount of light entering the camera. Learn how aperture affects your photos and the importance of understanding f-stop settings.

Sep 4, 2025 · Aperture is simply the opening inside a lens that lets light reach the sensor. I like to call it the lens’s pupil: it widens in low light and narrows in bright light.

5 days ago · An optical aperture is an opening or boundary within an optical system that limits the extent of light entering, propagating through, or exiting the system. It defines the bundle of rays - often …