Samsung NX mini - What Controls Out-Of-Focus Effects

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Concepts in Photography
What controls out-of-focus eects?
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.
27 mm F3.5 27 mm F11
DOF depends on focal length
The longer the focal length is, the lower the DOF gets.
9 mm angle
27 mm angle