{"lens":{"id":"ef-cine","displayName":"Canon EF (cine)","manufacturer":"Canon","flangeDistanceMm":44,"electronicProtocol":"Canon EF"},"body":{"id":"sony-e","displayName":"Sony E (incl. FE)","manufacturer":"Sony","flangeDistanceMm":18,"electronicProtocol":"Sony E"},"compat":{"lensMountId":"ef-cine","bodyMountId":"sony-e","feasibility":"mechanical","af":"manual-only","is":"n/a","aperture":"electronic","infinityFocus":"yes","adapterExamples":["Sigma MC-11 EF-E (electronic aperture pass-through)","Metabones EF-E Mark V","Viltrox EF-E5 / EF-NEX IV"],"caveats":["Smart EF adapters pass aperture commands through to the EF-cine lens iris — useful for setting T-stops electronically on a Sony FX body.","No AF (cine prime has no AF motor); follow-focus or wireless FIZ controls focus manually."],"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."}}}