I am using non OEM lenses. A G-Claron 150 ƒ9, a Gold Rim Dagor 8.25" ƒ6.8, a Rodenstock 135 ƒ4.5, a Kodak Anastigmat 130 ƒ6.3, a Meniscus in a Kodex No.1 ~ ƒ8, etc, etc, etc.