Flash sync speeds and apertures use – Canon 580EX User Manual

Page 14

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Just set the camera’s shooting mode to < Av=- (aperture-priority AE), -;Tv>

(shutter-priority AE), or <M> (manual) and you can use E-TTL ll/E-TTL

autoflash.

Using E-TTLII and E-TTL Autoflash in the Shooting Modes ■

Tv

Select this mode when yon want to set the sli utter speed manualiy.

The camera vwfl then automatically set (he aperture mgtchirig the shutter spee<i to obtan
a standard exposure
# ft the aperture display blinks, it means that the background exposure witi tre

underexposed or overexposed, Adjust the shutter speed until the aperture display
stops blinking.

Av

Select this mode when you want to set the aperture manually.

The camera will then automatically set the shutter speed matching the aperture to obtain

a standard exposure.
If the background is dark like a night scene, a stow sync speed will be used to obtain a
standard exposure of both ihe main subject and background. Standard exposure o1 the
main subject is obtained with the flash, white a standard exposure oi the background is

obtained with e slow shutter speed.
• Since a slo’w shutter speed will be used for low-light scenes, using a tripod is

recommended.

• If the shutter speed display blinks, it means that the background exposure will be

undereotposed or overexposed. Adjust the aperture untiJ the shutter speed display
stops blinking.

M

Select this mode when you want to set both the shutter speed and aperture mantalfy.
Standard exposure of the main subject is obtained wim the flash. The exposure of the
background i$ obtained with the shuiter speed and aperture combination you set.

* If you use the

<DEP>or <A'DEP>

shooting mode, the result wiJI be the same as using the

<P>

(Program AE) mode.

Flash Sync Speeds and Apertures Use

Stiutter Speed Setting -

Aperture Setting

p

Automatic (1/60 sec. ■ 1/X sec.)

Automalic

Tv

Manual (30 sec. -1« sec.)

Automatic

Av

Automatic (30 sec. - 1/X sec )

Manuat

M

Manual (bulb, 30 sec. - 1/X sec)

Manual

• 1/X sec. i$ the camera's maximum tiash sync speed.

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