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Schneider-Kreuznach 28mm f/4 Curtagon

The Schneider-Kreuznach Curtagon 28mm f/4 is a wide-angle retrofocus lens with a 7-element, 6-group design for SLR cameras. At approximately 220-240g with M 49 or M 52 filter threads, the retrofocus design provides sufficient back-focus clearance for SLR mirror mechanisms. The Curtagon name denotes Schneider's retrofocus wide-angle line, enabling wide-angle photography on single-lens reflex cameras.

Focal Length 28mm
Maximum Aperture f/4
Elements / Groups 7 / 6
Filter Thread 52mm
Weight 240g
Minimum Aperture f/22
Format Coverage 28.1 X 28.6 mm or *24 X 36 mm

Sales History

Prices shown are UK auction hammer results — the wholesale level achieved in the saleroom. Neither buyer’s nor seller’s commission is included. Dealer and retail asking prices are typically higher.

Date Price Source
Jan 2025 £56 Flints Auctions
Nov 2019 EUR 200 Leitz Auction