Brass Petzval Lens brand_Zeiss A very sharp lens either

A very sharp lens either way

made of soft pigskin with a velvety burgundy lining

with three access points to the main camera compartment

and easy shutter-priority autoexposure

not a modification

Brass Petzval Lens brand_Zeiss A very sharp lens eitherThis is an unmarked Petzval design brass lens for large format cameras. Likely from a projector there is no diaphragm or slot for Waterhouse stops it features rack and pinion focusing and pretty decently clean glass, free of fungus, with minor marks from cleaning over the last, like 100 years or more. Focal length and aperture are unknown. Includes a threaded flange for mounting to a lens board (not included). Will cover 4x5.