If 8-bit H.264's not good enough, you'll just have to bite the bullet with a ProRes camera/recorder. It's unrealistic to expect a prosumer camcorder to offer more than 8-bit in 4K - the file sizes are just too freaking huge. The JVC LS-300 does offer the next best thing: 8-bit 4:2:2 color in 1080p modes, and yes, it does make a perceptible difference in some cases.The JVC was such an exciting prospect, I have MFT lenses, MFT adapted prime lenses, EF lenses, S16 zoom lenses, Z-Finders. I could have used everything I own, and they limit it to 8 bit and H.264? Really?