Tom DelRosario wrote:
> 
> I ordered an Elan 7E (to replace my Rebel XS) and I should get it tomorrow.
> I was wondering when one would use center-weighted metering instead of 
> evaluative?  The manual (which I pre-ordered) is of no help, with just
> one sentence describing center-weighted metering.
> 
> Tom D

Both, evaluative and center weighted metering work quite good with
"normal" scenes, which are "medium bright" on average (18% gray).
The evaluative metering tries to be intelligent and automatically
compensate for tricky lighting (backlit scenes). The center weighted
doesn't. It strictly calculates a center weighted average of the
brightness of your scene and assumes this should be 18% gray.

So why would one use such a "dumb" metering? There are several
reasons. Experienced photographer know how to compensate for
tricky lightings and overly bright or dark scenes themselves.
With some experience, you will usually do a better job than
the evaluative metering would do automatically. There are also
lots of photographers around who are used to center weighted
metering because their older cameras all came with this kind
of metering. If you try to do exposure compensation on your own,
you need a reliable starting point. Center weighted metering will 
provide that, evaluative metering is tricky here, because you 
don't know if it already applied exposure compensation automatically.
Partial or spot metering are even better for experienced photographers,
because you can meter smaller parts of a scene.

Thomas Bantel
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