{"lens":{"id":"ef-cine","displayName":"Canon EF (cine)","manufacturer":"Canon","flangeDistanceMm":44,"electronicProtocol":"Canon EF"},"body":{"id":"fujifilm-gfx","displayName":"Fujifilm GFX (G-mount)","manufacturer":"Fujifilm","flangeDistanceMm":26.7,"electronicProtocol":"Fujifilm G"},"compat":{"lensMountId":"ef-cine","bodyMountId":"fujifilm-gfx","feasibility":"mechanical","af":"manual-only","is":"n/a","aperture":"electronic","infinityFocus":"yes","adapterExamples":["Fringer EF-GFX Pro","Steelsring EF-GFX"],"caveats":["EF image circle vignettes on the 44×33 mm GFX sensor — most users crop to 35 mm capture mode.","Aperture commands transmit electronically; focus is fully manual."],"formatNote":{"match":"lens-smaller-than-body","lensFormat":"full-frame","bodyFormat":"medium-format","cropFactor":null,"message":"Lens image circle (full-frame) is smaller than body sensor (medium-format) — expect heavy vignetting or black corners. Many bodies auto-crop to the smaller format and drop resolution accordingly."}}}