The Canon EF 15mm f/2.8 Fisheye is an autofocus full-frame fisheye prime for the Canon EF mount, introduced in the EF-mount era that began in 1987. It is a specialist ultra-wide optic intended for full-frame 180-degree diagonal coverage, used for landscape, architectural interiors, and creative distortion work.

Evidence of value at saleroom level is thin: the single UK auction hammer result on record is £180 from September 2020, which sits well below typical used-dealer retail. With only one data point in 2026, a fair guide to what the lens is worth today is anchored on that £180 figure, though clean, fungus-free copies with the original hood and caps can sell for more in private sales. Buyers should treat the auction market as the wholesale floor rather than a retail benchmark.