2. Using Other EOS-Dedicated Speedlites

With an EOS-dedicated Speedlite other than the EX series, TTL autoflash can be used as easily as normal AE modes. The flash exposure is controlled by off-the-film flash metering linked to the focusing point.

(1)When you press the shutter button halfway, the shutter speed and aperture are set automatically by the camera.

Mode

Shutter Speed Setting

Flash Aperture Setting

P (Program AE)

Auto (1/60 sec. - 1/200 sec.)

Auto

 

 

 

Tv (Shutter speed-priority AE)

Manual (30 sec. - 1/200 sec.)

Auto

 

 

 

Av (Aperture-priority AE)

Auto (30 sec. - 1/200 sec.)

Manual

 

 

 

M (Manual)

Manual (30 sec. - 1/200 sec.)

Manual

 

 

 

(2)When you press the shutter button completely, TTL autoflash metering based on the aperture setting is used for the flash exposure.

(3)The background exposure is set by the shutter speed and aperture combination.

Flash exposure compensation can be set with the camera.

If the multi-flash system is wired with flash cords, TTL autoflash takes effect.

Cover the main subject with the area AF ellipse.

Automatic Reduction of Flash Output

If an EOS-dedicated Speedlite is used for a subject backlit by a top light, the flash output is reduced automatically to avoid having an unnatural-looking exposure. This is called automatic reduction of flash output.

CF Custom Function CF-14 can prevent the automatic reduction of flash output. See page 118.

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Canon EOS-3 manual Using Other EOS-Dedicated Speedlites, 100