{"lens":{"id":"olympus-om","displayName":"Olympus OM","manufacturer":"Olympus","flangeDistanceMm":46,"electronicProtocol":"mechanical-only"},"body":{"id":"ef-cine","displayName":"Canon EF (cine)","manufacturer":"Canon","flangeDistanceMm":44,"electronicProtocol":"Canon EF"},"compat":{"lensMountId":"olympus-om","bodyMountId":"ef-cine","feasibility":"mechanical","af":"n/a","is":"n/a","aperture":"manual-ring","infinityFocus":"yes","adapterExamples":["generic mechanical adapter ring (multiple vendors)"],"caveats":["Mechanical adapter only — no electronic communication between Olympus OM lens and Canon EF (cine) body."],"formatNote":{"match":"match","lensFormat":"full-frame","bodyFormat":"full-frame","cropFactor":null,"message":"Lens image circle (full-frame) matches body sensor (full-frame) — no crop or vignetting concern."}}}