Brass Petzval Lens brand_Logan from 1:1 and beyond

from 1:1 and beyond

with some plastic smoothing on the grip from normal use and handling

The meter's even relatively accurate

or 1D X from a standard AC outlet

all in a pocketable clamshell case

Brass Petzval Lens brand_Logan from 1:1 and beyondThis 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.