PacAce wrote in post #12745161
Can you measure the a flash output of a flash in ETTL mode with your meter? I know the Sekonic meters won't let you do that because it always meters the preflash and not the main flash.
dmward wrote in post #12745591
I can't imagine how a flash meter will deliver any usable reading from a flash in TTL mode.
The power is adjusted on a shot by shot basis using the reflective meter in the camera and a preflash...
SkipD wrote in post #12745328
What the heck is "the ARCF mode"? I never heard that one.
ARCF (auto reset cordless flash) if it were a snake it would have bit you hehe
PacAce and DMWard,
- hit FEL (or AE* on some cameras (like my Rebel T1i)) - Preflash fires (you've got 16 seconds to make adjustments)
- camera locks the proper exposure based on PreFlash, Ambient, and user defined parameters
- then, have someone hit the "read" button on the sekonic
- take the pic of the meter... voila! (Then, you can even just view the readout on your LCD
- Make adjustments to your flash position/power to bring it into line with what you need, try again.
(The joys of digital... thats a long way around I learned when trying to use the meter when i didn't have PW or sync cables.)
It's seems just silly now, since for portraiture I only use manual flash mode now... but hey, you can learn alot by trial and error