Canon EOS 60D Instruction Manual page 36

Custom Function Settings*
The AEB shooting sequence and white balance bracketing sequence can
be changed.
0: 0, -, +
1: -, 0, +
0 : Standard exposure 0 : Standard white balance
- : Decreased exposure - : Blue bias _- : Magenta bias
+ : Increased exposure + : Amber bias i+ : Green bias
0: Disable
1: Enable (TvtAv)
This takes effect in the shutter-priority AE (Tv) and aperture-priority AE
(Av) modes. When the subject's brightness changes erratically and the
standard auto exposure cannot be obtained, the camera will change the
exposure setting automatically to obtain a standard exposure.
0: Auto
Normally, the sync speed will be set automatically within 1/250 sec. to
30 sec. to suit the subject brightness. High-speed sync can also take
effect.
1:1/250=1t60 sec. auto
When flash is used with aperture-priority AE (Av), 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.
2:1/250 sec. (fixed)
The flash-sync speed is fixed to 1/250 sec. This more effectively
prevents subject blur and camera shake than with setting 1. However,
the background may come out darker than with setting 1.
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