Canon 220EX - Manual (Page 33)

Flash with Other Modes
Automatic Slow-Speed Sync
Slow-speed sync is a slow shut­
ter speed setting you use with
the flash-for portrait photography
in dimly lit indoors or night out­
doors. By using a slower shutter
speed, you can expose the
background correctly while the
flash exposes the subject cor­
rectly.
Automatic slow-speed sync is
set automatically when Type B
cameras are set to the Av
(Aperture-priority AE) mode
where applicable.
When using slow-speed sync,
be sure to use a tripod to avoid
camera shake as a result of the
slower shutter speed.
[3 When a picture is taken under
MW fiuorescent iight using a day-
iight-balanced film without a
coior correction fiiter, the resuit
may appear with a green tint.
When a picture is taken under
tungsten iight using a dayiight-
balanced fiim without a coior
correction fiiter, the resuit may
appear with an orange tint.
Taken with a siow sync speed Taken with a normai sync speed.
-tj'-
' To cancel automatic slow-speed sync operations, set the camera to
the M (Manual) mode and set the desired shutter speed and aperture-
settings (see page 33).
The TTL autoflash control system will regulate the flash output accord­
ing to the shutter speed and aperture settings you set for optimum
flash exposure
' For handheld flash photography with an EF 135mm f/2.8 soft focus
lens, follow the procedure below to obtain optimum flash exposure.
1. Manually set to the maximum lens aperture (i.e., smaller aperture
value) to emphasize the soft focus effect.
2. Manually set to the slowest shutter speed possible without risk of
camera shake.
3. Make sure that the pilot lamp is lit and proceed to normal flash oper­
ation procedures.
31