Rodenstock Sironar 150mm f/5.6

Rodenstock Sironar 150mm f/5.6 is the classic Rodenstock 4×5 normal plasmat — the original Sironar at the iconic 150mm focal length. The lens that established Rodenstock's reputation in the LF market alongside the Schneider Symmar.

Key features

• Mount: Copal 0 shutter (1s to 1/500, X-sync at all speeds)
• Focal length: 150mm
• Maximum aperture: f/5.6
• Image circle: ~200mm at f/22 — covers 4×5 with generous movements
• Optical formula: 6-element/4-group plasmat
• Single-coated older; multi-coated later

Use case + rendering

The 150 Sironar is the classic 4×5 Rodenstock normal — long-running production, widely available on used market. Sharp by f/22; older single-coated examples adequate for B&W work.

Compatible cameras

• Toyo 45A / Toyo 45AII / Toyo 45G
• Cambo SC / Cambo Calumet 45NX
• Graflex Crown Graphic / Graflex Speed Graphic / Graflex Super Graphic

Related lenses

• Rodenstock Sironar-S 150mm f/5.6 — refined sibling
• Rodenstock Apo-Sironar-N 150mm f/5.6 — apochromatic successor
• Rodenstock Apo-Sironar-S 150mm f/5.6 — refined apochromatic
• Schneider Symmar 150mm f/5.6 — Schneider equivalent