Rodenstock APO-Sironar N 180mm f/5.6

Rodenstock Apo-Sironar-N 180mm f/5.6 is the modern 4×5 short-tele / 5×7 normal apochromatic plasmat — direct competitor to Schneider Apo-Symmar 180 / Fujinon CM-W 180.

Key features

• Mount: Copal 1 shutter (1s to 1/400, X-sync at all speeds)
• Focal length: 180mm
• Maximum aperture: f/5.6
• Image circle: ~252mm at f/22 — covers 4×5 with generous movements; covers 5×7 with movements
• Optical formula: Apochromatic plasmat
• Multi-coating standard

Use case + rendering

The 180 Apo-Sironar-N is the modern Rodenstock 4×5 portrait + 5×7 normal. Apochromatic correction reduces fringing on backlit portraits; multi-coating handles color landscape work well.

Compatible cameras

• Toyo 45A / Toyo 45AII / Toyo 45G
• Cambo SC / Cambo Calumet 45NX
• Graflex Crown Graphic / Graflex Speed Graphic / Graflex Super Graphic
• 5×7 view cameras

Related lenses

• Rodenstock Apo-Sironar-S 180mm f/5.6 — refined high-MTF version
• Schneider Apo-Symmar 180mm f/5.6 — Schneider equivalent
• Fujinon CM-W 180mm f/5.6 — Fujinon equivalent