Canon EOS 600D Instruction Manual page 72

O White <B> and Red <H> internal Temperature Warning Icons
if the camera's internal temperature increases due to prolonged movie
shooting or a 7igh ambient temperature, a white <l_l> icon will appear.
Even ifyou shoot a movie while this icon is displayed, the movie's image
quality will not be affected. However, if you shoot still photos, the image
quality of the still photos may deteriorate. You should stop shooting still
photos and allow the camera to coo! down
if the camera's internal temperature further increases while the white
<1_I> icon is displayed, a red <_> icon may start blinking. This blinking
con is a warning that movie shooting will soon be terminated
automatically. If this happens, you will not be able to shoot again until the
camera's internal temperature decreases. Turn off the power and let the
camera rest for a while.
Movie shooting at a high temperature for a prolonged period witl cause
the <_1> and <_Jl> icons to appear sooner. When not shooting, turn off
the camera.
Movie Shooting Cautions
Recording and image Quality
if the attached lens has an Image Stabilizer. the Image Stabilizer will
operate at all times even if you do not press the shutter button halfway.
The Image Stabilizer will thereby consume battery power and may
shorten the total movie shooting time or decrease the number of possible
shots./f you use a tripod or if the Image Stabilizer is not necessary, you
should set the IS switch to <OFF>.
The camera's built-in microphone will also record camera operation
_oise. Using a commercially-available external microphone can prevent
!or reduce) these noises from being recorded
Do not connect anytbing other than an external microphone to the
camera's external microphone IN terminal.
if movie shooting is not possible due to insufficient remaining capacity of
the card. the movie recording size and movie shooting remaining time
(p.146) will be displayed in red.
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