The Rollei Electronic Shutter 1 can be used with Rollei X-Act monorail and other technical cameras to attach view-camera lenses via lens panel of size 1.The compact design of this electronic shutter allows ample margin of camera movements for view-camera lenses to be used at short focal lengths and infinityThe lens control S unit helps manage the aperture and shutter speedIts shutter speed is 1/250 sec and the aperture adjustment can be made at 1/10 stop