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I have a problem with my Zivnon 500mm mirror lens, with a screw mount adaptor, and infinity.
If I understand it correctly, the distance between the sensor and the back element of the lens is crucial to reaching infinity?
Can anyone help me with the distance between the sensor and the front (Lens mount) of the camera. And what the distance between the sensor and the back element should be, for the mirror lens to be able to focus correctly? I want to try and see if I can modify the adaptor.
Any help appreciated!