Canon EOS REBEL T2I Instruction Manual page 47

Notes About the Shooting Results
When you snoo-[ conunuously with the Live View function for a long
period, the camera's internal temperatJre may increase and _t can
degrade image quality. Terminate LL_e View shootinc when not shooting
_mages.
Before taking a long exposure, stop Live View snooting temporarily and
walt several minutes before shooting. This is to prevent _mage
aegradation.
Live View shooung in high temperatures ana at hign ISO speeds may
cause noise or irregular colors
_ When you snoot at high ISO speeds, noise tuanding, dots of light, etc.
may appear.
If you take the picture during ma9nified view, the exposure might not
come out as desired. Return to the normal view before taking the picture.
During the magnified view. the shelter speea and aperture will be
displayed in red. Even if you take the picture aunng magnified view, the
image WIHDe cap[ured in the normal view.
If [ne [_: Auto Lighting Optimizer] (p.103) menu is set to anything
other than [Disabme], the _mage may look bNght even if a (Jecreasec
exposure compensation or flash exposure compensation has been se[.
Custom Function Notes
During Live View shootLng, certain Custom Function settings will be
disablee _F 191).
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 el an external Speedllte is
used. Modeling flash and test flash wilI not fire if an external Speedhte _s
useo
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