Samsung NX1 user manual DOF depends on the aperture value, What controls out-of-focus effects?

Concepts in Photography

Depth of field

The depth of field (DOF) is the focused area around the subject.

In general, the DOF can be shallow or deep. In photos with a shallow DOF, the subject is sharply focused, the background is blurred and the subject stands out. In contrast, photos with a deep DOF have all the elements of the photo in sharp focus.

You can create a photo with a shallow DOF by using a telescopic lens or by selecting a low aperture value. You can create a photo with a deep DOF by using a wide angle lens or by selecting a high aperture value.

What controls out-of-focus effects?

DOF depends on the aperture value

A low aperture value indicates that the aperture has a wide opening. The wider the aperture, the shallower the DOF becomes. Conversely, a high aperture value indicates that the aperture has a narrow opening. The narrower the aperture, the deeper the DOF becomes.

50 mm F5.7 50 mm F22

Shallow Depth of Field Deep Depth of Field

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