TheSchneider-Kreuznach APO-Tele-Xenar Compact MRC 400mm f5.6 is a compact telephoto-design lens that can cover up to 5×7 format. It’s “compact” in a very relative sense, which is to say, it’s still pretty big- but for a 400mm lens, it’s definitely smaller than many other options. Mounted in a good Copal 3 shutter, and in excellent condition, with nice clean glass. Includes a genuine Linhof Technika board.