Shutter button operation and autofocus – Canon EOS 1N RS User Manual
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7. Shutter Button Operation and Autofocus
The shutter button has a two step construction. Press halfway (to the first
step) to activate focusing and metering, and press completely (to the sec
ond step) to release the shutter and make the exposure.
1. Pressing Halfway
1) This activates autofocus. When the
subject is focused, the correspond
ing focusing point momentarily lights
red and the green in-focus indicator
lights up in the viewfinder (in One-
shot AF mode).
• The autofocus system uses five
focusing points.
• The focusing point does not light
up in automatic focus point selec
tion mode when the AF mode is
set to AI Servo.
•The in-focus indicator does not
light up in Al Servo AF mode.
2) At the same time, the camera deter
mines the shutter speed and aper
ture value combination (exposure
value), and the results are displayed
in the LCD panel and viewfinder. If
you remove your finger from the
shutter button, a timer operates to
continuously display the exposure
settings for six seconds.
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