Canon EOS-1DS Mark III Instruction Manual page 94

Tv" Shutter-Priority AE
in this mode, you set the shutter speed and the camera automatically
sets the aperture to obtain the correct exposure matching the
brightness of the subject. This is called shutter-priority AE.
A faster shutter speed can freeze the action or moving subject. Or a
slower shutter speed can create a blurred effect, giving the impression
of motion.
* <Tv> standsfor Timevatue.
Fast shutter speed Slow shutter speed
Tv 1_ _ Semect <Tv >.
® Press the <MODE> button and turn
the <_:_lO > dial to select <Tv>.
Set the desired shutter speed.
® While looking at the top LCD panel,
turn the <_:_> dial.
::_.,_. F ocus the subject.
® Press the shutter button halfway.
_y,, T he aperture is set automatically.
. _,, Check the viewfinder display and
shoot.
® As long as the aperture is not
blinking, the exposure will be correct.
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