| Because there are a number of circumstances, such as thick lensboards or wooden lensboards, where retaining rings can't be used, some lenses with 50mm mounting thread are supplied with a lens flange. The flange is secured to the enlarger lensboard with screws, and the lens is then threaded into the flange. These metal flanges have 50mm x .75 pitch thread. Please verify the mounting thread on your lens. Flange mounting screws not included. |
