Re: Conversion of lens for digital M body
No, there is no coupling between lens and the camera to tell the camera what the aperture ring is set to.
The metering is done through the lens, so that the light level the camera measures is a combination of the actual light level and the aperture you have preselected. The camera then sets the shutter speed based on this light level and the ISO being used, in M7 terms, the film speed you have loaded. It can also apply a +/- EV correction if required.
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Mark
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