Canon eos rebel t1i - Manual (Page 120)

120
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 (horizontal banding, light
dots, etc.) may appear.
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 the magnified view, the shutter speed and aperture will be
displayed in red. Even if you take the picture during magnified view, the
captured image will show the normal view.
Custom Function Notes
During Live View shooting, certain Custom Function settings will be
disabled (p.183).
If the [7 Custom Functions (C.Fn)] menu’s [Auto Lighting Optimizer]
(p.186) is set to a setting other than [3: Disable], the image may look
bright even if a decreased exposure compensation or flash exposure
compensation has been set.
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. Modeling flash and test flash will not fire if an external Speedlite is
used.