Voigtländer 10mm not coupling with the rangefinder/LiveView not activated at all?

[Martin K]

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If the lens moves at all, the amount it should move from infinity to 600mm is about 0,17mm if the lens is considered as a simple lens. It is obviously not, it has a few components. But this gives an idea of how little it has to be moved. Can easily be calculated as a first approximation by the formula x=f*f/(u-f), where x is the amount moved, u is the focus distance and f is the focal length. Martin

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