Question on K7 Pattern Metering with 3rd party lenses

Started Jun 17, 2010 | Discussions thread
photogerald
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Re: Question on K7 Pattern Metering with 3rd party lenses
In reply to godfrog, Jun 18, 2010

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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