{"lens":{"id":"nikon-f","displayName":"Nikon F","manufacturer":"Nikon","flangeDistanceMm":46.5,"electronicProtocol":"Nikon F (AI/AI-S/AF/AF-D/AF-S/AF-P)"},"body":{"id":"olympus-om","displayName":"Olympus OM","manufacturer":"Olympus","flangeDistanceMm":46,"electronicProtocol":"mechanical-only"},"compat":{"lensMountId":"nikon-f","bodyMountId":"olympus-om","feasibility":"requires-glass","af":"manual-only","is":"lens-only","aperture":"adapter-wheel","infinityFocus":"requires-correction","adapterExamples":["Speed Booster / focal-reducer family"],"caveats":["Flange clearance is only 0.5 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.","Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies."],"formatNote":{"match":"match","lensFormat":"full-frame","bodyFormat":"full-frame","cropFactor":null,"message":"Lens image circle (full-frame) matches body sensor (full-frame) — no crop or vignetting concern."}}}