{"lens":{"id":"sony-a","displayName":"Sony A / Minolta A","manufacturer":"Sony / Minolta","flangeDistanceMm":44.5,"electronicProtocol":"Sony/Minolta A (SSM/SAM)"},"body":{"id":"micro-four-thirds","displayName":"Micro Four Thirds","manufacturer":"Olympus / OM System / Panasonic","flangeDistanceMm":19.25,"electronicProtocol":"Micro Four Thirds"},"compat":{"lensMountId":"sony-a","bodyMountId":"micro-four-thirds","feasibility":"mechanical","af":"manual-only","is":"lens-only","aperture":"adapter-wheel","infinityFocus":"yes","adapterExamples":["generic mechanical adapter ring (multiple vendors)"],"caveats":["Mechanical adapter only — no electronic communication between Sony A / Minolta A lens and Micro Four Thirds body.","Lens has no aperture ring; choose an adapter with a built-in aperture-control wheel."],"formatNote":{"match":"lens-larger-than-body","lensFormat":"full-frame","bodyFormat":"MFT","cropFactor":2,"message":"Lens covers full-frame; body is MFT — 2× crop factor applies relative to the lens's native image circle. No vignetting; the body uses the centre of the lens."}}}