Good copy of this 35mm Phase One lens that I have used sparingly. Info from the manufacturer below. Posting here before I take it to eBay.
The professional choice for wide-angle, providing quality in both flash and daylight shooting. The Schneider Kreuznach 35mm LS f/3.5 lens is designed for ultimate quality wide angle imaging on medium format 645 format. This is a true architectural quality lens, challenged only by dedicated technical camera lenses.
