The Z100 uses Sony’s XAVC recording format first employed in the PMW-F55 CineAlta 4K camera. MPEG-4 AVC/H.264 compression is used for HD (1920 x 1080), QFHD (3840 x 2016) and 4K (4096 x 2160) content. But the latest high definition XAVC video format introduced by Sony is still not supported well by Final Cut Pro so far, not only the 4K video. To edit Sony PXW-Z100 XAVC footage in Final Cut Pro 7 or FCP X/6 smoothly, a suggestion is convert Z100 4K XAVC to ProRes with a professional XAVC Converter for Mac. I found there are several XAVC file converters are available for us.