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3. Improving Optical Performance
3. Improving Optical Performance
Stopping aperture down increases depth of eld, making the
foreground and background sharper. Stop aperture down
too far, however, and di raction will actually cause the image
to lose de nition. The e ects of di raction are partly in u-
enced by the size of the pixels in the camera image sensor,
but with the D800/D800E’s high resolution the e ects gen-
erally become noticeable around f/11. When you need more
depth of eld, don’t just immediately stop the lens all the way
down; instead, look for the aperture that o ers the best bal-
ance between sharpness and depth of eld. In the examples
on this page, you can see the grid lose de nition as aperture
is stopped down past f/11.
f/8 f/11
f/16 f/22