Rodenstock APO-Sironar N 300mm f/5.6

Rodenstock Apo-Sironar-N 300mm f/5.6 is the modern Rodenstock 8×10 normal flagship — successor to Sironar 300 at the standard 8×10 normal focal length.

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: Apochromatic plasmat
• Multi-coating standard
• Heavy — Copal 3

Use case + rendering

The 300 Apo-Sironar-N is the modern 8×10 universal normal Rodenstock flagship — direct competitor to Schneider Apo-Symmar 300 / Fujinon CM-W 300. Multi-coating gives clean color rendering on transparency film.

Compatible cameras

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

Related lenses

• Rodenstock Apo-Sironar-S 300mm f/5.6 — refined high-MTF version
• Rodenstock Apo-Sironar-W 300mm f/5.6 — wide-IC version
• Schneider Apo-Symmar 300mm f/5.6 — Schneider equivalent
• Fujinon CM-W 300mm f/5.6 — Fujinon equivalent