The Roc is a simple viewfinder camera for 36 mm square exposures on 127 film, made by IDAM in about 1951. Some examples of the camera have no exposure controls at all (as in the top picture here); others have an 'I' and 'B' shutter, selected with the knob to the side of the lens in the lower example. Similarly, examples of the camera may have a tripod bush and strap lugs, or not. In either case, the camera has the wide window in the top housing: McKeown states that this holds an extinction-type lightmeter, and it is hard to think of another use for the window, but certainly no optical wedge (or any markings) can be seen in the examples pictured here. The body of the camera is cast in a metal alloy, 'Zamak', its two halves held together with hinged clips of plated metal. It has a sliding metal cover over the red window.
An almost identical camera was sold as the Belco.
- McKeown, James M. and Joan C. McKeown's Price Guide to Antique and Classic Cameras, 12th Edition, 2005-2006. USA, Centennial Photo Service, 2004. ISBN 0-931838-40-1 (hardcover). ISBN 0-931838-41-X (softcover). p421-2.
- The Brief notes on the Roc at Cameras Downunder also state that there is no extinction meter in that example.
- Zamak is an alloy containing zinc, aluminium, magnesium, and copper (Kupfer in German).