Precautions - Canon EOS 55 Service Manual

Part 1: General Information
9. PRECAUTIONS
No. Cautions and
Supplementary Remarks
1. In the Full Auto and Programmed Image Control modes, the settings shown on the
AF mode dial, metering mode dial, and film transport mode dial may differ from the
actual modes set by the camera.
In the Full Auto and Programmed Image Control modes, the AF mode, metering mode, and
film transport mode are set automatically. Although the mode dials can still be rotated to any
setting, it will be overridden.
2. When the lens' focus mode switch is set to M, manual focus will be set, but the AF
mode dial will always indicate an AF mode. This may look contradictory.
As per the design.
3. After the number of multiple exposures is preset and the first exposure is taken,
cancelling the multiple exposure operation before the preset number is taken will
trigger the mirror to flip up and down once. The film is not exposed during this
reflex action.
As per the design.
4. When the built-in flash is used, any lens hood must be detached.
An attached lens hood will obstruct part of the flash coverage.
Use an external flash unit.
5. The built-in flash's maximum coverage corresponds to 28mm lenses. Therefore, if
the lens is wider than 28mm, there will be light fall-off at the edges.
To obtain wider flash coverage, use Speedlite 380 EX, 540EZ, 430EZ, or 420EZ.
6. While the built-in flash is being used or recharged, the electronic manual focusing
ring on USM lenses cannot be used.
The camera design does not allow power to be supplied to the built-in flash and lens at the
same time.
7. When a Programmed Image Control mode is used with an external flash unit, the
desired effect cannot be obtained. Therefore, using an external flash unit is not rec-
ommended.
When on, an external flash unit will always fire and the flash exposure will be controlled by the
A-TTL or TTL program instead of the Programmed Image Control mode.
8. With the focusing point camera-selected and the AI Servo AF and continuous shoot-
ing modes set, the shooting speed may become irregular when the subject moves to
another focusing point.
During the instant when the subject moves from one focusing point to another, focusing will be
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