Schneider's ultra-wide process lens — the G-Claron WA 270mm f/11 for large format.
The Schneider G-Claron is a large format process and field lens, designed for flat-field copy work, technical photography, and close-range large format applications. The WA (Wide Angle) designation and 270mm focal length at f/11 indicate a formula optimised for 1:1 to 3:1 reproduction ratios on 8×10in and larger view camera formats.
270mm focal length, f/11 maximum aperture, flat-field Goerz-type formula, designed for large format copy and process work, typically mounted in a Copal or Compur shutter.
The G-Claron WA is a specialist large format lens for technical photography, reprographics, and close-range macro work on large format cameras. It is not optimised for infinity focus landscape photography. As a process lens it delivers very flat field and excellent corner-to-corner sharpness at close-to-1:1 ratios — useful for large format photographers doing detailed copy or macro work.
Inspect for any mechanical damage and verify shutter function. Check coatings for cleaning marks or haze. Confirm compatibility with intended large format camera. Verify flange-to-film register is correct for the intended application.