Calumet Caltar II 300mm f/5.6

Calumet Caltar II 300mm f/5.6 is the Caltar II 8×10 normal — Calumet-branded Rodenstock Apo-Sironar-N 300 OEM.

Key features

• Mount: Copal 3 shutter (1s to 1/125, X-sync at all speeds)
• Focal length: 300mm
• Maximum aperture: f/5.6
• Image circle: ~425mm at f/22 — covers 8×10 with movements; covers 11×14 tightly
• Optical formula: Rodenstock Apo-Sironar-N OEM
• Multi-coating standard
• Heavy — Copal 3

Use case + rendering

The 300 Caltar II is the modern 8×10 universal Caltar normal — Rodenstock-grade glass at lower price.

Compatible cameras

• 8×10 view cameras with Copal 3 lens-board capacity
• 4×5 view cameras for long-tele use

Related lenses

• Rodenstock Apo-Sironar-N 300mm f/5.6 — Rodenstock equivalent
• Schneider Apo-Symmar 300mm f/5.6 — Schneider alternative
• Calumet Caltar S-II 360mm f/6.8 — longer Caltar S-II sibling