Concepts in Photography

What controls out-of-focus effects?

DOF depends on focal length

The longer the focal length is, the lower the DOF gets.

DOF depends on aperture value

The wider the aperture is (namely the lower the aperture value), the lower the DOF becomes. Under the condition where the focal length is equal, a low aperture value leads to a photo with a low DOF.

9 mm angle

27 mm F3.5

27 mm F11

27 mm angle

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Samsung EV-NXF1ZZB2HHU, EV-NXF1ZZB1KFR DOF depends on aperture value, Longer the focal length is, the lower the DOF gets
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