Bernard Lazareff , Jan 12, 2010; 02:59 p.m.
Had a Rollei 35, gave it. Anyway, to retract the lens, you must:
1/ Advance the film to cock the shutter
2/ Press a small button (don't remember exactly where, but it should be easy if you have the camera)
3/ then you can twist and push the lens.
Enjoy your Rollei 35