| This is the thin (5/8" thick) supplementary lens that must be installed in the lamphouse in Omega B-series condenser enlargers, including the B-3, B-4, B-5, B-6, B-7, and B-8, when using a 75mm or 80mm lens to print 6x4.5, 6x6, or 6x7 negatives. The flat edge on the lens allows you to insert your finger to make removing the lens easier. Refer to the enlarger manual for further instructions regarding positioning and use of the supplementary lenses. Omega part #472-011, Simmon part #4216 |
