about ETTL, You wrote:
> It seems to be rather inconsistent. Some shots it's perfect,
> and then the
> next shot it's massively overexposed. That's using a 550EX
> with an EOS-3
> in manual mode with E-TTL flash, which should be about as
> good as Canon's
> system gets.
Hi all,
If you use a gray card and FEL on it, you'll get very consistent results. The
basic problem with moving subjects is that E-TTL performs the metering before
the exposure and a subject changing position will likely be exposed for the
place/state it was before the exposure started and not the place/state it's at
the moment of the flash burst.
This situation get even worst with 2nd curtain sync given the greater potential
difference between where the subject was when metered and where the subject is
when exposed.
Add a possible change from metering zone and you have a bunch of variables that
will influence the "inconsistency" you're speaking about. Not to mention the
auto fill-in compensation in most models that will "magically" reduce flash
output when ambient levels increase.
I've been doing some bulb flash shots to stop moving subjects in free fall (in
my humble garage/studio) and found that E-TTL gives you what you ask from it.
Even when the shots are not very good, it helped me a lot to undestand E-TTL.
Greetings,
Gerard.
BTW: I'm using a 380EX and a EOS50E, so the only control I've over the flash is
ISO, FEC and FEL (and a kodak 18% gray card :-)
PS: The day I get a 'nice' shot from my bulb flash shots I'll post it somewhere
to let you see.
*
****
*******
***********************************************************
* For list instructions, including unsubscribe, see:
* http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************
