4.5x6cm Film Mask for Lubitel-166U Camera
Brand new film channel mask for Lubitel-166U. It reduces frame size from 6x6cm down to 6x4.5cm.
Lubitel-166U often came without such masks today. If you bought a camera without such mask, there is your chance to get one. There is no need in second (viewfinder) mask, as Lubitel-166U camera has 6x4.5 ground glass markers.