8. CONTROL THE APERTURE
IF THERE’S ONE mechanism I favor over the others on the camera, it’s the aperture. Actually, the aperture is located in the lens, not the camera body, and is comprised of a ring of overlapping metal leaves that open or close based on the user’s preference. Like ISO and the shutter, the aperture has a technical function: it’s the mechanism that completes the exposure triangle. It’s also a mechanism that can provide great aesthetic value for portraits.
The aperture controls an image’s depth of field—the amount of an image that appears in focus while looking into the frame. Depth of field is determined by the point at which ...
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