Fujinon CM-W 250mm f/6.3

Fujinon CM-W 250mm f/6.3 is the modern Fujinon 5×7 + 8×10 normal-class flagship — CM-W at slightly slower aperture (f/6.3) than the f/5.6 CM-W lenses, for compactness and cost reduction.

Key features

• Mount: Copal 1 shutter (1s to 1/400, X-sync at all speeds)
• Focal length: 250mm
• Maximum aperture: f/6.3
• Image circle: ~320mm at f/22 — covers 5×7 with generous movements; covers 8×10 tightly
• Optical formula: Compact plasmat with EBC multi-coating
• EBC multi-coating standard

Use case + rendering

The 250 CM-W is the 5×7 + 8×10 normal modern Fujinon flagship. Slightly slower aperture vs the 210 CM-W is acceptable for the focal length class — most LF photographers stop down to f/22 anyway.

Compatible cameras

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

Related lenses

• Fujinon CM-W 210mm f/5.6 — wider CM-W sibling
• Fujinon CM-W 300mm f/5.6 — longer CM-W sibling
• Fujinon W 250mm f/6.7 — earlier W predecessor