Rodenstock APO-Sironar N 240mm f/5.6

Rodenstock Apo-Sironar-N 240mm f/5.6 is the modern 5×7 short-tele / 8×10 normal apochromatic plasmat.

Key features

• Mount: Copal 1 shutter (1s to 1/400, X-sync at all speeds)
• Focal length: 240mm
• Maximum aperture: f/5.6
• Image circle: ~330mm at f/22 — covers 5×7 with generous movements; covers 8×10 with movements
• Optical formula: Apochromatic plasmat
• Multi-coating standard

Use case + rendering

The 240 Apo-Sironar-N serves as portrait lens for 4×5, short-tele for 5×7, and normal for 8×10. Direct competitor to Schneider Apo-Symmar 240 / Fujinon CM-W 250.

Compatible cameras

• Toyo 45A / Toyo 45AII / Toyo 45G
• Cambo SC / Cambo Calumet 45NX
• 5×7 + 8×10 view cameras

Related lenses

• Rodenstock Apo-Sironar-S 240mm f/5.6 — refined high-MTF version
• Schneider Apo-Symmar 240mm f/5.6 — Schneider equivalent
• Fujinon CM-W 250mm f/6.3 — Fujinon equivalent