Gary Fisher <[EMAIL PROTECTED]> wrote:
>
> - --- Pawel Nabe <[EMAIL PROTECTED]> wrote:
> > I keep reading that you loose A-TTL with bounce
> > flash.
> > Is this true for all bodies (that support A-TTL)?.
> > When I dump the exposure data that my EOS 600 (630)
> > stores with its Technical Back E, then I always
> > see 'A-TTL' in Programm mode. I use bounce flash
> > all the time. However if I switch to Manual mode
> > or use the Macro Ring Lite then 'TTL' gets stored
> > just as expected.
> > So I don't seem to loose A-TTL with bounce flash.
>
> Check the post at the following url:
>
>
>http://www.listquest.com/lq/view.cgi?ln=canoneos&mid=79223&sp=&q=gary+fisher+430ez+540ez&b=1&s=1&a=1&o=0&x=17&y=7
>
> It's comparing the differences between the 430EZ and
> 540EZ flashes. I'm expecting to find that you're using a
> 430EZ (or maybe a 420EZ) as it gives the A-ttl
> pre-flash in bounce mode - a feature disabled with the
> 540EZ.
> Does that post describe your situation?
It does describe the situation. Ich have experience only with
420EZ and 430EZ speedlites. I once tried a 540EZ (with EOS600)
but it made the (genuine Canon) lens always stop down to f22,
so that I thought it to be incompatible.
>From the above mentioned thread I deduct that it seems
to depend on the flash and the camera used. Why is this so?
Esp. what good is A-TTL if it is switched off with some flashes?
--
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