Gary Kaplan wrote:
> How useful would a strictly TTL flash like a Vivitar 730AF be in my
> situation? Wouldn't it be hard to get good fill flash results since
> there is no a-ttl and no flash compensation?
Not overly hard I think. You could achieve flash exposure compensation
by changing the ISO setting and compensate the effects on ambient
exposure by applying (ambient) exposure compensation.
Well, that has been my standard reply to similar questions over the last
years. Maybe I just grow old and wise, :-) but this time I was tempted
to add: Has someone actually tried out if this trick actually works? And
then I thought: Why shouldn't I try it out myself? I have everything
here to do the test. And so I did the following simple test:
I put my 420EZ flash on my EOS 100 and put the camera to TV mode at 1/60
second. I shoot several times towards my flash meter with different
settings of ambient exposure compensation. The viewfinder shows a
blinking f/2.8 every time, so the aperture is the same on all shots. And
the flash meter shows, that the flash output varies *exactly* according
to the set exposure compensation. I think, this means the trick
described above does NOT work.
Therefor, manual mode on the camera is your only option to get flash
exposure compensation. Vary the ISO setting and set your ambient
exposure manually.
Thomas Bantel
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