Focus cam will fit on 4x5 Linhof Technika IV, V and Master models. The leading edge will need to be filed down to calibrate a specific 90mm lens. I will provide instructions on how this is done on request. This version is intended to be used with the focus bed at 90 degrees. This will work fine for landscape images, but will cause the bed to protrude into the bottom of the image with portrait orientation. A small amount of shift will overcome this. The advantage of using the level bed is that it is quicker to set up the camera and be ready to shoot. If you prefer to use the camera as Linhof intended, select my version of this cam for dropped bed. Available in Aluminum or Bronze. Either will work fine. Bronze is stronger, but costs more.