Rodenstock's enlarger lens — 150mm f/5.6 designed for darkroom print enlargement, not camera use.
The Rodenstock Rodagon 150mm f/5.6 is a professional enlarger lens designed for darkroom photographic enlargement, optimised for flat-field performance at close reproduction distances rather than infinity focus. The Rodagon is Rodenstock's premium enlarger lens series. Not a standard camera prime.
f/5.6 maximum aperture (enlarger lens). 150mm focal length. Optimised for close-reproduction distances (not infinity). Rodenstock Rodagon series (high-quality enlarger designation). Enlarger lens mount (M39 or M42 screw thread depending on version) — not a standard camera bayonet.
Enlarger lenses like the Rodagon are optimised for flat-field performance at reproduction ratios of 1:1 to 1:10 — the opposite design priority from a camera lens optimised for infinity. They are used in darkroom enlargers for film printing and in macro/repro photography on cameras with extension tubes or bellows. The Rodagon series is highly regarded for resolution and flatness.
On the used market the Rodenstock Rodagon 150mm f/5.6 is a high-quality enlarger lens for darkroom or macro use. Condition checks: element clarity for haze, dust, or fungus, aperture blade condition, iris smoothness, thread condition for target enlarger or camera adapter. Requires camera adapter for use on a camera body.