60 Day 100% money back guarantee. Offered here is one Schneider-Kreuznach Componon 4/28 lens, marked 28mm F/4 and Lens Made in Germany. This is the black BKV-L enlarging-lens barrel style with the green aperture window and threaded mounting interface shown. It is suited to darkroom enlarging and can also be adapted for macro, close-up, copy, or machine-vision imaging with buyer-supplied mounting hardware. No camera, enlarger, lens board, adapter, or other accessory is included beyond the lens and attached cap shown. The lens has not been functionally, optically, or aperture tested. It shows light cosmetic scuffs, handling marks, and surface dust consistent with storage. Please review the photographs for condition and configuration. Two units are pictured because two are available; each purchase includes one lens, and the exact unit supplied may vary slightly in cosmetic appearance. Keyword Block: schneider-kreuznach, componon 4/28, 28mm f4, bkv-l, enlarging optic, darkroom lens, macro photography, german made, m39 mount