Canon EOS 60D Instruction Manual page 173

During movie shooting, do not point the lens toward the sun. The sun's
heat can damage the camera's internal components.
Cautions for movie shooting are on pages 187 and 188.
If necessary, also read the Live View shooting cautions on pages
168 and 169.
About the White < > and Red <E> Internal Temperature
Warning Icons
If the camera's internal temperature increases due to prolonged movie
shooting or a high ambient temperature, a white < > icon will appear.
Even if you shoot a movie while this icon is displayed, the movie's image
quality will not be affected. However, if you switch to still shooting, the
image quality of the still photos may deteriorate. You should stop
shooting still photos and allow the camera to cool down.
If the camera's internal temperature further increases while the white
< > icon is displayed, a red <E> icon will start blinking. This blinking
icon is a warning that the movie shooting will soon be terminated
automatically. If his happens, you will not be able to shoot again until he
camera's internal temperature decreases. Turn off the power and let the
camera rest for a while.
Movie shooting at high temperature for a prolonged period will cause the
< > and <E> icons to appear sooner. When not shooting, turn off the
camera.
You can also focus by pressing the <p> button.
AE lock is possible by pressing the <A> button (p.122). To cancel AE
lock during movie shooting, press the <S> button.
The ISO speed, shutter speed, and aperture are set automatically.
By turning the <5> dial, you can set exposure compensation.
Pressing the shutter button halfway displays the shutter speed and
aperture (p.176) on the screen's bottom left. This is the exposure setting
for taking a still photo.
k Shooting Movies
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