Canon EOS Rebel XS Instruction Manual page 72

Av: Changing the Depth of FieJd _Jg/_
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 ,_3e_turevalue which is the size of the diaphragm hole inside
the lens
Blurred background
(With alarge aperture opening)
Sharp fotegreund and background
(With a small aperture opening)
Set the Mode Diat to <AV>.
'_ Set the desired aperture,
_, The Mgher the aperture, the sharper
the picture wilt look with a wider depth
of field
e Turning the <S:_> dial to the right wifl
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
comp_eteb, The picture will be taken
with the seIected aperture.
About the Aperture Display
The larger the f/number, the smaller the aperture opening wil_ be. The
apertures displayed will differ depending on the lens. If no Lens is attached to
the camera, _gg" wilJ be displayed for the aperture.
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