I just received one of these bad boys today from a dealer in Hong Kong. Has anyone else here shot with one? I'm noticing some odd quirks to it right off the bat - for starters, the aperture markings on the barrel are ass-backwards - when the lens is wide open, it shows as f22. Can this be easily remedied, or does it mean a trip to SK Grimes and $$$? Second, it's a heavy little mo-fo. I'm assuming the entire barrel is solid brass. Also, it is stop-down metering, no auto-aperture which is annoying but can be dealt with. Does anyone know if those third-party lens chips like the ones they make for Contax lenses to adapt them to Canon EOS will work on this lens, and if so, can they be easily added or is that another SKGrimes/$$$ operation?