Joe Wilensky <[EMAIL PROTECTED]> wrote:

>I'm still not sure I get it:

>From reading what you wrote below I think you have got it quite well.

>I guess my question is, why doesn't the LX + AF280T problem happen, 
>in that the flash doesn't fire at all since the ambient light 
>exposure is so bright that the TTL system thinks enough flash power 
>has been pumped out already? 

That situation *can* occur in situations with bright ambient light. You
need to have the lens stopped down enough to prevent the ambient light
from quenching the flash immediately. And you have to have a powerful
enough flash to compete with the ambient light.

>Or wouldn't it fire the flash at the shortest duration possible 
>since the light striking the film from the daylight exposure is 
>already bright enough to satisfy the flash TTL sensor?

Yep. If the ambient light is so strong that the TTL sensor sees
sufficient lighting immediately (or almost immediately) it will fire the
flash at the shortest possible duration and you won't get the fill-flash
effect.

This can be a big problem in bright outdoor situations and it's one of
my main frustrations with Pentax at the moment: Forget IS, HSM and DSLR
and other trendy acronyms - I want a more powerful flash than the 360FGZ
to go with my MZ-S! (and I mean an FGZ-spec flash with high-speed sync
and flash compensation.)

-- 
Mark Roberts
Photography and writing
www.robertstech.com

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