a D300 matrix metering question

Started Dec 7, 2007 | Discussions thread
Murray Bowles
Murray Bowles Senior Member • Posts: 2,146
Re: a D300 matrix metering question

The whole matrix metering algorithm is such a mystery that it's no wonder there are no clear answers. If it's really matching the image against a database, then what exactly does "weighting" mean? In the original FA algorithm, some scene types were exposed entirely by averaging; only in contrasty scenes was the center of the image weighted when calculating the exposure. In the D300, the meter, in addition to knowing the active AF point also knows where the subject recognition algorithm thinks the subject is -- does it weight a small region under the AF point, the larger subject region, or a little of both?

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