I just received my NX1 with Pentax, Nikon and T2 adapters so I did a few quick tests with a 50mm F1.4 FA Pentax, 300mm F4 M* Pentax , 15mm F2.8 Sigma and it looks they may work better than my GH4. I used a trial version of Edit Ready on my Mac Pro for the H.265 to H.264 conversion.