On Mon, 31 Mar 2003 12:59:51 -0800 (PST), you wrote:
Well, having had great experience with EOS-3 evaluative metering as well Spot metering for potentially tricky situations I wonder when one would need 8.5% partial metering instead.
Would be grateful if comebody would teach me.
Regards, Alex
Alex -
There are a lot of ways to use partial metering. It can be thought of as a large spot, say for a shot with a major area of one value; partial metering is also useful when you have key subject contrast areas close together in a shot, so they can be included under the partial reading area: say you're shooting a flower partly in shadow - you can position the 8.5% zone so that it includes both values, kind of a limited averaging function. It is good with backlit subjects, so that you limit you're readint to expose only your subject correctly. I don't own an EOS-3, but have a number of other cameras with parital. I am pretty sure you can also use partial for flash exposure lock, another possibly useful feature.�
I'm sure others will have useful comments.
Ken Durling
The thing with partial metering, or spot metering or even averaging metering is that you know what the camera is doing. With multi-segment evaluative metering you're leaving the final decision to the camera.
For a quick grab shot, program and evaluative metering is fine, but if you have a moment to decide things, you might know better than the camera. It's the same with autofocus; for a lot of situations, autofocus is fine, but occasionally you have to touch it up, and under some situations it's just better to be MF from the start.
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