what is aperture?

Aperture is defined as the opening in a lens through which light passes to enter the camera, measured in f-stops. You can shrink or enlarge the opening to let more or less light into the camera. Increasing the aperture, increases the overall exposure.

what is depth of field?

Depth of field is the distance between the closest and farthest objects in a photo that appears acceptably sharp. You can change the depth of field by changing the aperture.

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