{"lens":{"id":"canon-ef-s","displayName":"Canon EF-S","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":"canon-ef-s","bodyMountId":"sony-e","feasibility":"mechanical","af":"full","is":"full","aperture":"electronic","infinityFocus":"yes","adapterExamples":["Sigma MC-11 EF-E","Metabones EF-E Mark V","Viltrox EF-E5 / EF-NEX IV"],"caveats":["EF-S is electronically identical to EF, so smart EF-E adapters drive AF, IS and electronic aperture on EF-S lenses exactly as on EF — STM EF-S lenses focus reliably for stills.","EF-S's APS-C image circle covers an APS-C E body (a6700, FX30, ZV-E10 II) natively; on a full-frame α the camera must stay in APS-C crop mode or the corners vignette.","AF speed depends on the lens; check the adapter maker's per-lens chart for older USM glass."],"formatNote":{"match":"lens-smaller-than-body","lensFormat":"APS-C","bodyFormat":"full-frame","cropFactor":null,"message":"Lens image circle (APS-C) is smaller than body sensor (full-frame) — expect heavy vignetting or black corners. Many bodies auto-crop to the smaller format and drop resolution accordingly."}}}