{"lens":{"id":"canon-ef-s","displayName":"Canon EF-S","manufacturer":"Canon","flangeDistanceMm":44,"electronicProtocol":"Canon EF"},"body":{"id":"nikon-z","displayName":"Nikon Z","manufacturer":"Nikon","flangeDistanceMm":16,"electronicProtocol":"Nikon Z"},"compat":{"lensMountId":"canon-ef-s","bodyMountId":"nikon-z","feasibility":"mechanical","af":"partial","is":"full","aperture":"electronic","infinityFocus":"yes","adapterExamples":["Fringer EF-NZ II"],"caveats":["EF-S is electronically identical to EF, so the Fringer EF-NZ II drives AF, electronic aperture and IS on EF-S lenses exactly as on EF.","EF-S's APS-C image circle covers only APS-C — on a full-frame Z body (Z6 III / Z8 / Z9) the camera shoots in 1.5× DX crop mode or vignettes; native coverage only on APS-C Z bodies (Z50 / Zfc / Z30).","Single-shot AF is near-native; continuous-AF runs a notch behind native Z glass and is firmware-dependent — check Fringer's per-lens chart."],"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."}}}