Number 1 on my list would be for Leica users to be able to adjust the rangefinder more quickly than is currently possible. In January, 2020 I sent my M10 in to Leica Service in Allendale, NJ for rangefinder calibration. It took a full month for the camera to be returned to me. This is unacceptable for any who uses the camera professionally. I suggest Leica equip their Stores to do the calibration in a day or two, or release information on how a Leica user can adjust his/her own rangefinder.
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