--- [EMAIL PROTECTED] wrote:
> Just got a Minolta meter -- the IV, with flash and
> ambient reading
> capability. Checked the TTL of my PZ1-P vs. the
> meter, and here's what I
> found:
>
> 1. The PZ-1P is consistently about 2/3 stop hotter
> with TTL than it needs to
> be... but it is consistent.
> 2. At closer ranges with a diffuser on the flash, it
> comes quite close, at
> about 1/2 stop hot.
> Compared my Minolta to a friends and got the same
> readings. He shoots Canon,
> and says his Canons typically are a bit hotter as
> well. Any thoughts from
> anyone on this?
If you're using Minolta flash meter with a dome it's
meetering incident light while your camera is
meetering reflective light. So the measures will
hardly be dead on unless you take a reflective
meetering from a 18% greycard.
> Also, when I use the PZ-1P's flash compensation,
> cutting the output by 1 EV
> doesn't seem to lower the output very much at all;
> even going -3 doesn't move
> the output down much more than a stop. Why is this?
The camera algorithm that calculates flash exposure
using TTL is quite complex and it involves ambient
light as well. I don't think you can just use a hand
held meeter and compare the readings. When you dial in
exposure compensation the camera can either increase
flash output or keep the shutter oppened longer.
Herbet.
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