--- [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?
>
> 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?
>
> == pete ==
> -
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>
The reflected meter will vary according to what color
the subject is, becuase not all colors reflect the sam
eamount of light. An ambient meter reads teh actual
amount of light reaching an object, therefore is
unaffected by colors etc... Try your experiment again
this time shooting into an 18% gray card, since camera
meters are calibrated for 18% gray. Also, since the
flash is metered off the film plane, and the pressure
plate has a different reflectivity than a roll of film
does you will get different flash output if you have a
roll of film in vs an empty camera.
Nick
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