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Using the Built-in Flash
Flash Sync Speeds and Flash Apertures
Mode
Sync Speed
Flash Aperture
p
The sync speed is set
automatically to 1/90 sec.
The flash aperture is set
automatically according to the
TTL program.
Tv
Any sync speed 1/90 sec. or
slower can be set manually.*
The flash aperture is set
automatically to match the sync
speed you set.
Av
The sync speed is set
automatically within a range of
30" to 1/90 sec. to match the
flash aperture you set.
You set the flash aperture
manually.
M
Any sync speed 1/90 sec. or
slower can be set manually.*
* If the sync speed is set faster than 1/90 sec., it will be reset automatically to 1/90 sec.
o • When using the built-in flash, stay at least 1 meter away from the subject.
Othenvise, part of the photo will look dark.
• When using the built-in flash, detach any hood attached to the lens. A lens
hood will partially obstruct the flash coverage.
• If any of the following lenses is attached to the camera, the flash coverage of
the built-in flash might be obstructed. Use an external, EOS-dedicated
Speedlite with these lenses.
Fast lenses such as the EF 17-35mm f/2.8L USM and EF 28-70mm f/2.8L USM.
Super telephoto lenses such as the EF 300mm f/2.8L IS USM and EF 600mm f/4L IS USM.
• The built-in flash's flash coverage is effective for lenses with a focal length of
28mm or longer. At focal lengths shorter than 28mm, the periphery of the
photograph will look dark.
• Before attaching an EOS-dedicated Speedlite to the camera, push down the
built-in flash if it is popped up.
H • To retract the built-in flash, push it down.
• When it is difficult to focus, the AF-assist beam will be fired automatically.
(->page 26)
• The built-in flash and an external, EOS-dedicated Speedlite attached to the
camera cannot be used at the same time.
61
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