{"lens":{"id":"pl","displayName":"PL (Positive Lock)","manufacturer":"Arri (industry standard)","flangeDistanceMm":52,"electronicProtocol":"mechanical-only"},"body":{"id":"micro-four-thirds","displayName":"Micro Four Thirds","manufacturer":"Olympus / OM System / Panasonic","flangeDistanceMm":19.25,"electronicProtocol":"Micro Four Thirds"},"compat":{"lensMountId":"pl","bodyMountId":"micro-four-thirds","feasibility":"mechanical","af":"n/a","is":"n/a","aperture":"manual-ring","infinityFocus":"yes","adapterExamples":["Wooden Camera PL-MFT","Metabones PL-MFT"],"caveats":["2× crop applies — Super-35 PL primes give a ~4× full-frame equivalent. Useful on BMPCC 4K / 6K (BMPCC 4K is actually MFT mount), GH5, GH6."],"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."}}}