Rollei Rolleinar 2 Bayonet RII . Taking lens part.

Rolleinar 2. Planar- Xenotar 3.5) bay II

Designed for close-up shots at distances closer than 1 meter.

Use: With the two Rolleinars set 2 the Rollei is converted for a focusing range from 50 cm to 31cm. Each set is composed of two optically matched frontal lenses with different mounts. The Rolleinar with the thicker mount is for the viewing lens and contains a built-in prism for parallax correction. As a result the field of view in the ground glass coincides with the photograph even at very short distances. A red dot at the mount indicates the uppermost side for correct positioning in use.