I think the one stop difference is due to the way the multi-segment metering
works. Notice the person in the highlight area on the the right-hand side of
the lady. In the upper shot, the camera tries to compensate for the higher
contrast, and thus selects a shorter exposure time.

This is a typical situation where using spot metering would give you much more
consistent results.

Jostein

Quoting Shel Belinkoff <[EMAIL PROTECTED]>:

> http://home.earthlink.net/~my-pics/2up.jpg
> 
> Just nine seconds separate these two pics.  They are almost identical
> shots.  Both were made with the istDs, both at a rating of 3200 ISO, both @
> 70mm, both at an aperture of 5.6, both using multi-segment metering, both
> using auto focus (more on that later!), both on one of the automatic modes,
> yet they are a stop apart, with the top pic made @ 1/30 sec and the bottom
> @ 1/15.
> 
> What crummy results these are.  The pics, imo, should have an identical
> exposure.  They would were a funky old manual camera body being used.  Is
> this the kind of  erratic results one can expect from high-tech cameras, or
> is there some sort of failure to communicate or understand on my part?  Why
> would these pics be so far apart in their results?
> 
> 
> Shel 
> 
> 
> 




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