Roll-Op

The Roll-Op II was a medium format folding camera made by the German company Plaubel in the 1930s. The body was based on the Balda Baldax, with the addition of a coupled rangefinder, separate from the viewfinder. This rangefinder unit was the same as the one mounted on the Makina. The lens was a Plaubel Anticomar 7.5cm f/2.8. It is possible that the same lens has been used with the name Plaubel Makinar. The shutter was a Compur to 1/250 or a Compur-Rapid to 1/400. The body had an automatic exposure counter, that only needs a red window for the first frame. This camera apparently existed in two versions, one with 4.5x6cm format and the other with 6x6cm format.

The Roll-Op was apparently the same camera without a rangefinder. At the end, it appears that the rangefinder version was sold as Roll-Op in short, sometimes written Rollop.