> "Kotsinadelis, Peter (Peter)" <[EMAIL PROTECTED]> wrote:
> The only way to use an optical slave is to put the flashes in manual
> so they only emit one flash and no more.
> If you use it in E-TTL it will not work, and neither will a flash meter.
> Been there, done that.
Hi Peter,
Thanks for the hints about E-TTL. The ability of the 550EX to switch to
TTL mode and the ability to manually control flash power were the deciding
factors against my choosing the 420EX. Of course, YMMV.
But I was trying to use the 550EX on an optical slave trigger to synchronize
to some non-EOS equipment using TTL flash.
Interestingly, my old 430EZ behaves properly with the optical slave
trigger :-) without needing to reset the trigger between shots. So the
550EX gets to live on the Elan 7E, and the 430EZ gets used as the optical
slave...
Nikon has the SU-4, which seems to function like the Ikelite Lite-Link.
http://www.nikonusa.com/usa_product/product.jsp?cat=1&grp=4&productNr=3073NCP
http://www.ikelite.com/web_pages/lite_link.html
Now for my flash wish list :-)
Wouldn't it be great if Canon (or someone else) could make an E-TTL hotshoe
slave adapter! The receiver should be able to respond optical slave (first
flash OR second flash, ignoring preflash) as well as "reading" the E-TTL
signals for Slave groups A, B, or C.
And the hotshoe should take *ANY* TTL flash, even stuff like Vivitars,
Sunpaks, Canon, etc.
Cheers
Julian Loke
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