OP please correct me if I misunderstood you. I think that the OP meant that when the scale on the lens is set at 0.85 m then the film plane has to be 0.65 m from the subject for the rangefinder images to match. I found that this is true for my XA as well however it does not result in out of focus image because the lens is actually focus at 0.65 m only the scale on the lens is wrong. In fact you would be wrong by 20cm if you were to estimate or measure the distance with a ruler and set the lens using its scale.
Originally Posted by grommi