Fujinon Fujinon-A 240mm f/9

Fujinon A 240mm f/9 is the apochromatic process / macro 5×7 + 8×10 lens at 240mm — the longer A sibling, covering 5×7 generously at infinity and 8×10 tightly.

Key features

• Mount: Copal 0 shutter (1s to 1/500, X-sync at all speeds)
• Focal length: 240mm
• Maximum aperture: f/9
• Image circle: ~336mm at infinity; ~440mm at 1:1
• Optical formula: 6-element/4-group apochromatic dialyte
• Single-coated on most production
• Process / macro optimization

Use case + rendering

The 240 A is the alternative-process 5×7 + 8×10 normal Fujinon lens. Used for contact-print workflows on 5×7 + 8×10 platinum, palladium, cyanotype prints. Sharper at 1:1 than at infinity, but usable across both ranges.

Compatible cameras

• Toyo 45A / Toyo 45AII / Toyo 45G — usable as 4×5 long-tele
• Cambo SC / Cambo Calumet 45NX — extension rails recommended for close-focus
• 5×7 + 8×10 view cameras

Related lenses

• Fujinon A 180mm f/9 — wider A sibling
• Fujinon AS 300mm f/9 — longer AS sibling
• Schneider G-Claron 240mm f/9 — Schneider equivalent