Rodenstock Sironar 180mm f/5.6

Rodenstock Sironar 180mm f/5.6 is the classic Rodenstock 4×5 short-tele / 5×7 normal plasmat — original Sironar at 180mm focal length.

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: ~245mm at f/22 — covers 4×5 with generous movements; covers 5×7
• Optical formula: 6-element/4-group plasmat
• Single-coated older; multi-coated later

Use case + rendering

The 180 Sironar is the classic 4×5 portrait + 5×7 normal Rodenstock plasmat. Long-running production; widely used.

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 Sironar 150mm f/5.6 — wider Sironar
• Rodenstock Sironar 210mm f/5.6 — longer Sironar
• Rodenstock Apo-Sironar-N 180mm f/5.6 — apochromatic successor