The Rolleiflex 4.0 FW is a medium-format twin-lens reflex camera shooting 6x6 on 120 roll film, fitted with a wide-angle taking lens. It was produced in limited numbers in the 2000s as part of Rollei's late-run TLR series aimed at collectors and working medium-format photographers.

Sales data for the 4.0 FW is extremely thin: a single recorded UK auction hammer result of £3,600 from 2020 is the only data point available, so any sense of current value in 2026 has to be drawn from that one sale rather than a true range or median. Because hammer prices reflect wholesale saleroom levels rather than retail, clean dealer-listed examples typically sell for noticeably more than this figure, and condition, box, and accessories all materially affect what one is worth today.