Interchange device for focusing discs in a single-lens reflex camera

摘要

A description is given of a single-lens reflex camera having a removably mounted focusing disc, in which a focusing disc insert for installing the focusing disc in the camera body and the focusing disc are constructed as a unit having a spring, which is provided between these for the purpose of forming a focusing disc unit; the focusing disc insert is provided with a clamping and retaining section for engaging with an interchange tool which is used to mount the focusing disc unit on the camera body and to move it therefrom, as a result of which the interchange operation for the focusing disc can be carried out easily and reliably.