When using the self-timer, place the camera on a tripod.
All interchangeable lenses with a M42x1 thread and a focal distance between 37 and 1000mm can be used. If the interchangeable lens does not have an automatic aperture, the aperture ought to be operated manually. It can occur that a long focal covers a small part of the negative. This can also be of influence to the automatic exposure.
With the aid of a bellows or rings, pictures can be taken at short distances and reproductions of drawings, manuscripts, pictures etcetera made.