I just picked up a 9x12 Voightlander Avus plate camera. I chose this one because it has the 135 mm Colour Skopar lens on it and I've heard that it is a excellent quality lens. For some reason the previous owner installed a Kalart Rangefinder on one side of the camera. It has linkages to the inside of the camera attached to the bed on one side but I don't think it actually does anything. Can anyone say for sure that this camera did actually come with this mounted on the camera or was someone trying to do something that the camera was not designed to do.