From: Bleuer Csaba <[EMAIL PROTECTED]> Hi,
Thanks for your answers. My collegue has found a sentence in the EOS300D users guide that declares, that the EOS300D works only with ETTL flash. There is no TTL sensor in it at all... :-(((
The question is: What is a difference between a TTL and an E-TTL flash? The camera body can make the TTL flash to output a short flash also. Why can't it make a short flash for pre-flash, and a calculated length flash as main flash? The flash itself doesn't need to know if it was a main or pre-flash...
The question is theoretical, I can not make it work anyway...
Csaba
Hi,
AFAIK, TTL flashes (actually cameras) measure light reflected from film and cut out flash output when there�s enough light.
On the other hand E-TTL system emits pre-flash to measure needed output for the actual flash burst.
Therefore they are using different measuring sensors and data/commands are different on both systems.
Good light Grega
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