Fujinon AS 300mm f/9

Fujinon AS 300mm f/9 is the Apochromatic Super process / macro 8×10 lens at 300mm — for alternative-process work on 8×10 contact prints and macro work.

Key features

• Mount: Copal 1 shutter (1s to 1/400, X-sync at all speeds)
• Focal length: 300mm
• Maximum aperture: f/9
• Image circle: ~420mm at infinity; ~560mm at 1:1
• Optical formula: Apochromatic Super dialyte
• Single-coated on most production
• Process / macro optimization

Use case + rendering

The 300 AS is the alternative-process 8×10 normal Fujinon — the lens of choice for 8×10 contact-print photographers in cyanotype, palladium, gum-bichromate. Sharper than the older A series at close-focus distances.

Compatible cameras

• Cambo SC / Cambo Calumet 45NX — extension rails recommended
• 8×10 + 11×14 view cameras

Related lenses

• Fujinon AS 180mm f/9 — wider AS sibling
• Fujinon AS 360mm f/10 — longer AS sibling
• Schneider G-Claron 305mm f/9 — Schneider equivalent