Product picture - Beseler Lensboard with Extension for 150mm Schneider APO-Componon HM Lens for 4x5 and 8x10 Series Enlargers Beseler, Lensboard, with, Extension, 150mm, Schneider, APO-Componon, HM, Lens, 4x5, 8x10, Series, Enlargers Click the image to close this page