Question on K7 Pattern Metering with 3rd party lenses

Started Jun 17, 2010 | Discussions thread
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photogerald Senior Member • Posts: 1,798
Re: Question on K7 Pattern Metering with 3rd party lenses

godfrog wrote:

Does anyone know why this limitation exists? What information does the camera need from the lens in order to use matrix metering? Seems to me that all needed information should be available from just the metering module, but I guess there is something more to it.

IIRC, the information that is required is the exact aperture setting. Presumably so that the metering system can calculate the EV that is used to compare the scene against pre-set patterns.

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