From: "Tom Robertson" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: 3 stycznia 2001 19:55
Subject: EOS Canon 550EX Slave vs Master Flash ratio
> Here is what I am trying to do. I want to place one 550Ex flash to one
side
> of my subject and let it be the main flash. I want to use the second
550EX
> on my camera as a fill flash. I am trying to do this and maintain ETTL.
> The on camera flash is set as the master and the other flash as slave
which
> is my main flash. in other words I would like to set the ratio of the on
> camera flash to anywhere from 1/4 to 1/2 of the slave unit. It would
appear
> by reading the manual that the A:B flash ratio only applies to two flashes
> that are acting as slaves. Any way I can do this and maintain ETTL
> metering. I am trying to preclude having to use an external flash meter.
>
> The camera is a Canon EOS-1V.
I did some tests with 2 550's and ST-E2, softboxes and umbrella you'll soon
be able to see some initial results at Daniel's site.
Bye,
Rafal
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