{"lens":{"id":"exakta","displayName":"Exakta","manufacturer":"Ihagee Dresden","flangeDistanceMm":44.7,"electronicProtocol":"mechanical-only"},"body":{"id":"fujifilm-gfx","displayName":"Fujifilm GFX (G-mount)","manufacturer":"Fujifilm","flangeDistanceMm":26.7,"electronicProtocol":"Fujifilm G"},"compat":{"lensMountId":"exakta","bodyMountId":"fujifilm-gfx","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 Exakta lens and Fujifilm GFX (G-mount) body."],"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."}}}