Canon EOS M, Основное руководство пользователя

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f
: Changing the Depth of Field
146
If the picture will be too dark, the “ 30 "” (30 sec.) shutter speed
display will blink. If this happens, tap to display the setting screen
and then tap [
Y
] (or turn the <
5
> dial to the left) to set a lower
aperture f/number or increase the ISO speed.
If the picture will be too bright, the “
4000 ” (1/4000 sec.) shutter
speed display will blink. If this happens, tap to display the setting
screen and then tap [
Z
] (or turn the <
5
> dial to the right) to set a
higher aperture f/number or decrease the ISO speed.
To obtain a correct flash exposure, the flash output will be set
automatically to match the set aperture (autoflash exposure). The
shutter speed will be set automatically between 1/200 sec. - 30 sec. to
suit the scene’s brightness.
In low light, the main subject is exposed with the automatic flash, and
the background is exposed with a slow shutter speed set automatically.
Both the subject and background look properly exposed (automatic
slow-speed flash sync). If you are handholding the camera, keep it
steady to prevent camera shake. Using a tripod is recommended.
To prevent a slow shutter speed, under [
A
1: External Speedlite
control ], set [ Flash sync. speed in Av mode ] to [ 1/200-1/60 sec.
auto ] or [ 1/200 sec. (fixed) ] (p.221).
Using Speedlite 90EX