Nikon 4799 F6 Instruction Manual - Page 164

C O L U M N About Depth of Field The section provides a basic explanation of the relationship between focus and depth of field. • Depth of field When focusing, depth of field should always be considered. Depth of field is the area of your photo that is most sharply in focus in front of and behind the subject in which the lens is focused. Depth of field varies according to shooting distance, focal length and, above all, aperture. Smaller apertures (represented by larger f-numbers) will produce a deeper depth of field where the background and foreground remain sharp; larger apertures (represented by smaller f-numbers) will produce a shallower depth of field where the background becomes blurred. Similarly, a shorter shooting distance or a longer focal length will produce a shallower depth of field, and a longer shooting distance or a shorter focal length will produce a deeper depth of field. Note that depth of field tends to be shallower in front of the subject in focus and deeper behind it. Large aperture f/2.8 Small aperture f/32 C O L U M N 164