![]() It limits the brightness of an image by restricting the input pupil size. So why is it called a stop? Simply put: it’s an aperture setting that limits the light coming into the lens. The aperture of your lens is displayed in f-numbers, the so-called f-stop (or focal-stop number). Related Post: What is ISO in Photography? Aperture and f-stops But too large of an opening will allow in unwanted light, causing overexposure.Īperture also allows a photographer more creative freedom in deciding what parts of the image to sharply concentrate on and what parts to intentionally blur. A larger hole allows more light to enter, resulting in brighter images. Aperture works similarly, in that its opening widens or narrows in response to the intensity of the light entering it.īy adjusting the size of the blades, you can control the amount of light entering the camera. The human pupil dilates or contracts in response to changes in the brightness of the surrounding light. Your camera sensor will be able to take in a greater quantity of light when the blades are wide open as the blades continue to close, the amount of light that reaches your sensor will decrease. The lens’s aperture mechanism is made up of a series of opaque “blades” known as diaphragms. ![]() In this article, we’ll go over what it really means, why it matters, and how photographers use it.Īperture refers to the size of the opening inside the lens that lets light into the camera. ![]() Aperture is one of those terms that seems simple enough on the surface but actually has quite a lot of technical jargon behind it.
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