The Canon FD 100mm f/2.8 is a manual-focus short telephoto prime for the Canon FD mount, a system Canon produced from 1971 until 1987 before switching to the EF autofocus mount. Its moderate telephoto reach and relatively fast f/2.8 aperture made it a practical choice for portraits, candids and compressed-perspective work on Canon SLR bodies of that era.

At recent UK auction, hammer prices for the FD 100mm f/2.8 have sat in a narrow £30–£60 band across the four tracked sales, with a median close to £48 and the most recent January 2026 result landing at £35. That tells you what a clean, working copy is realistically worth at saleroom level today: this is a budget-friendly FD telephoto rather than a collector piece, and there is no clear premium visible in the data for any particular variant.