A generic Canon 100mm f/2.8 listing — likely the FD, EF, or EF Macro depending on specific item.
The listing 'Canon 100mm f/2.8' without mount specification likely refers to the Canon FD 100mm f/2.8 Macro S.S.C. (ID 4379), Canon EF 100mm f/2.8 Macro (ID 4346), or Canon EF 100mm f/2.8L Macro IS. The mount and specific version should be verified before purchase. All Canon 100mm f/2.8 lenses are well-regarded.
Optical performance varies by version — all Canon 100mm f/2.8 options deliver good macro quality. The FD version offers vintage rendering. The EF version adds AF. The L IS version adds stabilisation and superior optics. Verify which specific lens this listing represents before evaluating optical performance.
Mount unspecified — could be FD, EF, or other. Verify before purchase. The specification is consistent across versions — 100mm f/2.8 macro with 1:1 magnification. Weight and features vary significantly by version. The EF L IS is the premium option; the EF non-L is the budget choice.
Verify the specific version and mount before purchase. All Canon 100mm f/2.8 lenses are capable macro optics. The price varies dramatically between FD, EF, and L IS versions. Do not assume the mount — confirm before buying.