The Mamiya RB67 75mm f/3.5 is a wide-angle Sekor lens for the RB67 medium-format SLR system, covering the 6x7 format with a moderately wide field of view. It was designed for the bellows-focusing RB67 platform used widely in studio and editorial work.

Sales data for this lens is thin: a single UK auction hammer result of £225 from August 2022 is the only reference point, so any sense of what one sells for today rests on that lone data point rather than a true range or median. As of 2026, that figure should be read as a wholesale auction-market value rather than a dealer asking price, and condition-driven variation in worth is likely wider than this single sale can show.