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04-22-2009, 08:45 AM   #1
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P-TTL vs Canon E-TTL

I switched from Canon to Pentax recently, and got the Metz flash yesterday. As far as I understand, both P-TTL and E-TTL are pre-flash based TTL. However, the preflash from the Metz(Pentax) is obvious as the delay between it and the main flash is long. However, when I was using Canon 580EX, I didn't notice this kind of delay.
Is the delay the feature of P-TTL or the Metz flash? Thanks.

04-22-2009, 11:30 AM   #2
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QuoteOriginally posted by Taikonaut Quote
I switched from Canon to Pentax recently, and got the Metz flash yesterday. As far as I understand, both P-TTL and E-TTL are pre-flash based TTL. However, the preflash from the Metz(Pentax) is obvious as the delay between it and the main flash is long. However, when I was using Canon 580EX, I didn't notice this kind of delay.
Is the delay the feature of P-TTL or the Metz flash? Thanks.
I don't know about the Metz flash on the Pentax, but with the Pentax AF-540FGZ I can't even perceive a gap between the preflash and the main flash. Are you sure you don't have your flash set for "red eye" reduction?

JimH
04-22-2009, 07:28 PM   #3
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You are absolutely right...
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