Which adapter do I need for my body and lens?
Two dropdowns. The result tells you whether the combination is native, mechanical, focal-reducer-required, or not adaptable — plus recommended adapter SKUs, autofocus level, IS pass-through, aperture-control method, and the known caveats for that specific pairing.
Pick a body mount and a lens mount to see the recommended adapter path. All 225 mount combinations are computed in your browser — no network round-trip, no tracking.
How the picker decides
Each combination is computed from the flange focal distance of the two mounts. A mechanical adapter needs at least 2 mm of flange clearance; less than that but within 12 mm is the range where a focal-reducer (Speed Booster) can correct infinity focus. A mirrorless lens cannot be mounted onto a DSLR body because the rear element would collide with the mirror box. Curated overrides layer on top for documented smart-adapter SKUs (Canon EF-EOS R, Nikon FTZ II, Sony LA-EA5, Sigma MC-11 and MC-21, Metabones EF-E, Viltrox EF-EOS R, Fringer EF-FX and EF-GFX, Voigtländer M-mount, Techart LM-EA9, and others).