Calumet Caltar II 240mm f/5.6

Calumet Caltar II 240mm f/5.6 is the Caltar II 5×7 short-tele / 8×10 normal — Calumet-branded Rodenstock Apo-Sironar-N 240 OEM.

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 tightly
• Optical formula: Rodenstock Apo-Sironar-N OEM
• Multi-coating standard

Use case + rendering

The 240 Caltar II is the Caltar 4×5 portrait / 5×7 short-tele / 8×10 normal.

Compatible cameras

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

Related lenses

• Rodenstock Apo-Sironar-N 240mm f/5.6 — Rodenstock equivalent
• Schneider Apo-Symmar 240mm f/5.6 — Schneider alternative