Abstract: In a macrolens having a distance setting ring, which is rotatively supported on the lens mount, and a lens component sliding longitudinally therethrough along the lens axis, as well as a diaphragm drive, it is proposed that for the automatic and smooth stop setting in accordance with the distance setting, the diaphragm drive, mounted on the longitudinal sliding lens component, be connected by means of a diaphragm drive pin to a converter, which is placed on the lens mount and is formed, for example, by a guide slot extending angularly to the lens axis, to convert the longitudinal motion of the lens component into a rotational motion of the diaphragm drive pin.