{"lens":{"id":"pentax-k","displayName":"Pentax K","manufacturer":"Pentax / Ricoh","flangeDistanceMm":45.46,"electronicProtocol":"Pentax K (KAF/KAF2/KAF3/KAF4)"},"body":{"id":"konica-ar","displayName":"Konica AR","manufacturer":"Konica","flangeDistanceMm":40.5,"electronicProtocol":"mechanical-only"},"compat":{"lensMountId":"pentax-k","bodyMountId":"konica-ar","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 Pentax K lens and Konica AR body.","Lens has no aperture ring; choose an adapter with a built-in aperture-control wheel."],"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."}}}