Canon EOS 550D Instruction Manual page 39

_m Shooting Movies
_$_,, F ocus and shoot the movie.
® The procedure is the same as steps 2
and 3 for "Autoexposure Shooting"
(p.124).
@
With manua_ exposure shooting, AE lock and exposure compensation
canno_ De se*[,
Changing the aperture aufing movie shooting Is not recommended since
variations _nme exposure, due to the drive of the lens aperture will De
FecorGeQ.
If you use a lens whose aperture changes \4 bile you zoom, you shouid
nor zoom while shoot ng a movie. Zooming while shooting a movie may
recora changes in the exposure.
If you shoot a movie under fluorescent lighting, the movie image m_gh[
flicker.
With Auto ISO. the correct movie exposure will usually be oe[alned 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. is recommended. The fas-cer me snu[[er speed, the less
smooth the subject's movement will look
_ If you playback me movie with "Shooting information display" (p.!73), the
snooting mode, shu[[er speea, and aperture wilJ not be aLsplayea. The
image ntormation (Exif) will record the settings used at the start of the
movie shooting
128