The Canon FD Fisheye 7.5mm f/5.6 is an ultra-wide manual-focus fisheye lens for Canon's FD SLR mount, the system Canon used between 1971 and 1987 before switching to the EF autofocus mount. With a 7.5mm focal length and an f/5.6 maximum aperture, it was built for specialist wide-field work on FD-mount 35mm film bodies rather than general photography.

UK auction data for this lens is thin: a single recorded hammer result of £312 at a UK saleroom in May 2024 sits as the only reference point, so as of 2026 a clean copy realistically sells for somewhere in that region rather than a wide range. Because hammer prices exclude buyer's premium, the all-in cost to a winning bidder is higher than the headline figure, and dealer retail asking prices typically sit well above auction levels. With only one verified sale, the true market value of the FD Fisheye 7.5mm f/5.6 is best treated as indicative until further results come in.