> "Alex" <[EMAIL PROTECTED]> wrote:
> "The camera calculates flash exposure differently
> in E-TTL, and the concept of an arbitrary flash-fill ratio
> does not apply."
> So, does that mean that a 420EX in ETTL mode (as it always
> is on an Elan 7), does NOT automatically choke the flash
> output in bright light? And if it does, how on Earth are
> we supposed to know what kind of light is "EV 13" or above?
Hi Alex,
I have a simple way, if you are using the Elan 7.
When using flash, P mode suggests a shutter speed depending
on the ambient light level.
At EV 10 or below, auto shutter speed is 1/60s
At EV 13 or above, auto shutter speed is 1/125s (x-sync).
These correspond approximately to the beginning and end of
auto-flash exposure compensation. So I can guess when my
Elan 7E is applying FEC and how much :-)
Cheers
Julian Loke
P.S. This does not apply to my EOS 1000FN / REBEL SII, which
always uses 1/90 for flash :-(
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