Rodenstock APO-Ronar 240mm f/9

Rodenstock Apo-Ronar 240mm f/9 is the apochromatic process / macro dialyte at 240mm — Rodenstock's equivalent to Schneider G-Claron 240, optimized for 1:1 reproduction.

Key features

• Mount: Copal 1 shutter (1s to 1/400, X-sync at all speeds)
• Focal length: 240mm
• Maximum aperture: f/9
• Image circle: ~330mm at infinity; ~440mm at 1:1
• Optical formula: Apochromatic dialyte (process-lens design)
• Single-coated typical
• Process / macro optimization

Use case + rendering

The 240 Apo-Ronar is the alternative-process 5×7 + 8×10 normal Rodenstock — for cyanotype, palladium, gum-bichromate contact-print workflows where process aesthetic suits older lens character.

Compatible cameras

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

Related lenses

• Rodenstock Apo-Ronar 300mm f/9 — longer Apo-Ronar
• Schneider G-Claron 240mm f/9 — Schneider equivalent
• Fujinon A 240mm f/9 — Fujinon equivalent