Thermal Issues - Canon EOS 1D Mark III - Digital Camera SLR User Manual

If the light source changes, the Live View picture may flicker. If this happens, stop the Live
View shooting and press the SET button to start the Live View shooting again. During
continuous shooting, the exposure for the first shot will also be applied to subsequent
shots. If the sun or other bright light source enters the picture, the bright area might look
dark. However, it will be correctly recorded as a bright area. Note that FE lock and
modeling flash cannot be used.
Normal shooting
SW-1 ON
Metering (AE sensor)
AF (AF sensor)
SW-2 ON
Mirror lockup
Shutter opens
Exposure (CMOS)
WB (CMOS)
Shutter closes
Mirror returns
Captured image displayed

Thermal Issues

With Live View shooting, the camera's internal temperature increases due to heat from
the CMOS sensor, and other components. For normal shooting, this is not a problem.
There is no Live View operation limit at 23°C/73°F for Remote Live View shooting and
Camera Live View shooting, whether you use a memory card or external recording media
via the WFT-E2A. However, if the camera is under direct sunlight or near hot studio lights
during Live View shooting, the camera's internal temperature will increase more than
usual and the screen may show a warning icon shaped like a thermometer. If the warning
icon appears, you can continue shooting and the operation will not be forced to terminate
if you are using a memory card. However, since the image quality might degrade, it is
recommended that you stop shooting if the warning icon appears. If you use a MicroDrive
and you keep shooting even when the warning icon appears, the Live View shooting will
terminate automatically after the internal temperature reaches a certain level. This is to
protect the MicroDrive from the heat. If the Live View shooting terminates automatically,
Live View shooting will not be possible until the internal temperature goes down.
VI. LIVE VIEW MODE
Viewfinder shooting
Flash
SW-1 ON
Metering (AE sensor)
AF (AF sensor)
SW-2 ON
Flash metering (AE sensor)
Mirror lockup
Shutter opens
Exposure (CMOS)
WB (CMOS)
Shutter closes
Mirror returns
Captured image displayed
Live-view shooting
Normal shooting Flash
SET: Mirror lockup SET: Mirror lockup
Shutter opens Shutter opens
Metering/WB Metering/WB
(CMOS) (CMOS)
SW-1 ON
SW-2 ON SW-2 ON
Shutter closes Shutter closes
Mirror returns
Flash metering (AE sensor)
Mirror lockup
Shutter opens Shutter opens
Exposure (CMOS) Exposure (CMOS)
Shutter closes Shutter closes
Captured image displayed Captured image displayed
( Live-view display/
SW-1 ON
Continuous shooting)
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