Aperture

Concepts in Photography

The aperture is one of the three factors that determine the exposure. The aperture housing contains thin, metal plates that open and close to let light through the aperture and into the camera. The size of the aperture is related to the amount of light: a larger aperture allows more light and a smaller aperture allows less light.

Aperture sizes

Minimum aperture	Medium aperture	Maximum aperture

The size of the aperture is represented by a value known as an “F-number.” The f-number represents the focal length divided by the diameter of the lens. For example, if a lens with a 50 mm focal length has an f-number of F2, the diameter of the aperture is 25 mm. (50 mm/25 mm=F2) The smaller the f-number, the greater the size of the aperture.

The opening in the aperture is described as the Exposure Value (EV). Increasing the Exposure Value (+1 EV) means the amount of light doubles. Decreasing the Exposure Value (-1 EV) means the amount of light halves. You can also use the exposure compensation feature to fine-tune the amount of light by subdividing exposure values into 1/2, 1/3 EV, and so on.

+1 EV		-1 EV
F1.4	F2	F2.8	F4	F5.6	F8

Exposure Value Steps

Aperture opened slightly

Aperture opened wide

EV-NX300MBUTRU, EV-NX300MBMUDE, EV-NX300MBUTDE, EV-NX300MBQUSA, EV-NX300MBMTDE specifications

The Samsung EV-NX300MBSVDE and EV-NX300MBSTTR cameras are compact mirrorless systems that blend advanced technology with user-friendly features for photography enthusiasts and professionals alike. These models are part of Samsung's NX series, which has gained a reputation for delivering exceptional image quality and versatility.

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