Canon EOS REBEL T2I Instruction Manual page 53

_m Shooting Movies
_$_s Focus and shoot the movie.
® The procedure is the same as steps 2
and 3 for "Autoexposure Shooting"
(p.124).
@
With manual exposure shooting AE Jock ana exposure compensation
canno[ De set,
Changing the shutter speea or aperture aunng mowe shooting is not
recommended since variations _n_ne exposure wilI be recorded
If you use a lens whose aperture changes while you zoom, you snoula
not zoom while shooung a movie. Zooming while shooting a mo_ le may
recora changes in the exposure.
If you shoot a movie under fluorescent lighting, the movie image migh_
flicker.
With Auto ISO. the correct movie exposure will usua W be obtained even
if the ight level changes.
Wnen snooung a movie of a moving subject, a shutter speed of 1/30 sec.
Lo 1/125 sec. _s recommended. The fas-cer me snu[ter speed, the less
smooth the subject's movement will look
_ Ufyou playback me movie with "Shooting information display" (p.!73), the
snoohng mode, shu[ter speea, and aperture wilJ not be aLsplayea. The
image ntormation (Exif) witl record the settings used at the start of the
movie shooting
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