Canon Macro Twin Lite MT-24EX - Manual (Page 24)

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If the camera has a depth-of-field preview button, pressing it will fire the
flash continuously for 1 sec. This is called the modeling flash. It enables
you to see the shadow effects on the subject and the lighting balance.
The modeling flash also works with a wireless, multi-Speedlite system.
Modeling Flash
The value of the bar in the flash ratio scale below is indicated in
parentheses.
In terms of aperture stops, the flash ratio range is equivalent to 3:1 - 1:1 -
1:3.
If the picture is taken while is not displayed, flash tubes/heads
A and B will fire at the same output.
Flash ratio control is not possible with the following cameras. You can fire
both flash tubes/heads at the same output or fire only one of the flash
tubes/heads.
EOS ELAN ll/ELAN ll E/50/50E, EOS REBEL G/500N, EOS IX, EOS IX
Lite/IX7, EOS 3000/88, EOS REBEL 2000/300, EOS REBEL XS N/
REBEL G II/3000N/66
(5.6:1) (2.8:1) (1.4:1) (1:1.4) (1:2.8) (1:5.6)
MR14_MT24_02.fm Page 22 Saturday, January 23, 2010 10:46 AM