Custom Function Settings - Canon EOS Rebel T1i Instruction Manual

Custom Function SettingsN
3
Custom Functions are organized into four groups based on the function
type: C.Fn I: Exposure, C.Fn II: Image, C.Fn III: Auto focus/Drive, C.Fn
IV: Operation/Others.
C.Fn I: Exposure
C.Fn-1
0: 1/3-stop
1: 1/2-stop
Sets 1/2-stop increments for the shutter speed, aperture, exposure
compensation, AEB, flash exposure compensation, etc. Effective when you
prefer to control the exposure in less fine increments than 1/3-stop increments.
The exposure level will be displayed in the viewfinder and on the LCD
monitor as shown below.
C.Fn-2
0: Off
1: On
Enables ISO 6400 and H (equivalent to ISO 12800) to be set. However,
if [C.Fn-6: Highlight tone priority] is set to [1: Enable], ISO 6400 and
"H" cannot be set.
C.Fn-3
0: Auto
The flash sync speed is set automatically within a range of 1/200 sec. to
30 sec. to suit the scene's brightness.
1: 1/200-1/60 sec. auto
When flash is used with aperture-priority AE (f), this prevents a slow
flash-sync speed from being set automatically in low-light conditions.
It is effective for preventing subject blur and camera shake. However,
while the subject will be properly exposed with the flash, the background
will come out dark.
2: 1/200 sec. (fixed)
The flash-sync speed is fixed to 1/200 sec. This more effectively
prevents subject blur and camera shake than with setting 1. However,
the background will come out darker than with setting 1.
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Exposure level increments
ISO expansion
Flash sync. speed in Av (Aperture-priority AE) mode