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Rick Sammon's Exploring Photographic Exposure by Rick Sammon

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1Aperture and Depth-of-Field

fig1_1.jpg

The aperture affects the depth-of-field, that is, what is in focus in front of and behind your focus point. At small apertures, or lens openings (illustrated by the graphic on the left of the illustration), we have more in focus than at wide apertures (illustrated by the graphic on the right).

Two other factors impact depth-of-field: One, the lens in use and the camera-to-subject distance. Two, the longer the lens and the closer you are to the subject, the shorter the depth-of-field.

fig1_2.jpg

My goal here was to get ...

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