These two photographs, taken from the same location with the same lens and the same ISO setting, demonstrate the effect of different F-stop/aperture settings in controlling depth of field. Using a shutter speed of 1/100th and an F-stop of f16 the left photo’s depth of field is much greater than the photo at right. Notice painted face in background at left. By adjusting my F-stop to f4.0 with a shutter speed of 1/1250th, I was able to control my depth of field, throw background elements out of focus and place more emphasis on the foreground painter at right.

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