Canon EOS 60D Instruction Manual page 169

Notes About the Shooting Results
When you shoot continuously with the Live View function for a long
period, the camera's internal temperature may increase and it can
degrade image quality. Terminate Live View shooting when not shooting
images.
Before taking a long exposure, stop Live View shooting temporarily and
wait several minutes before shooting. This is to prevent image
degradation.
Live View shooting in high temperatures and at high ISO speeds may
cause noise or irregular colors.
When you shoot at high ISO speeds, noise (banding, dots of light, etc.)
may become noticeable.
If you take the picture during magnified view, the exposure might not
come out as desired. Return to the normal view before taking the picture.
During he magnified view, the shutter speed and aperture will be
displayed in red. Even if you take the picture during magnified view, the
image will be captured in the normal view.
If he [2 Auto Lighting Optimizer] (p.101) menu is not set to [Disable],
the image may look bright even if a decreased exposure compensation
or flash exposure compensation has been set.
Custom Function Notes
During Live View shooting, certain Custom Func ion settings will not take
effect (p.251).
Notes About Lenses and Flash
The focus preset feature on super telephoto lenses cannot be used.
FE lock is not possible when the built-in flash or an external Speedlite is
used. The external Speedlite's modeling flash also cannot be used.
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