The Canon FD 100mm f/4 Macro is a manual-focus short telephoto macro lens for the Canon FD mount, produced during the FD era (1971–1987). Designed for close-up and copy work, it pairs a moderate f/4 maximum aperture with a dedicated macro focusing helicoid, and was typically used with an extension tube to reach 1:1 reproduction.

At recent UK auction, hammer prices for the FD 100mm f/4 Macro have sat in a narrow £50–£70 band, with a median around £60 across the three recorded sales between 2023 and 2024. As of 2026 these saleroom results reflect wholesale levels achieved without commission, so retail asking prices from dealers typically run higher than what this lens sells for in the auction market; condition, glass clarity and presence of the matching extension tube are the main drivers of where a copy lands in that range.