Av: Changing The Depth Of Field - Canon EOS 550D Instruction Manual

Av'
Changing the Depth of Field
To obtain a blurry background or to make everything near and far look
sharp, set the Mode Dial to <Av> (Aperture-priority AE) to adjust the
depth of field (range of acceptable focus),
* <Av > stands for Aperture value which is the size of the diaphragm hole inside
the lens.
Blurred background Sharp foreground and background
(With a high aperture f-number: f/32) (With a low aperture f-number: f/5.6)
" I Set the Mode Dial to <Av>.
2
Set the desired aperture.
® The higher the aperture f-number, the
sharper the picture will look with a
wider depth of field.
® Turning the <_> dial to the dght will
set a higher f-number, and turning it
to the left will set a lower f-number.
Take the picture.
® Focus and press the shutter button
completely. The picture will be taken
with the selected aperture.
The higher the f-number, the smaller the aperture opening will be. "The
apertures displayed wi!! differ depending on the lens. _fno lens is attached to
the camera, '!0O, wi!! be displayed for the aperture,
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