[quote name='Tzedekh' timestamp='1348232756' post='18809']
Again, the codec is the weak link. A greater dynamic range would tend to make banding even more apparent.
[/quote]
Let me guess, someone who hasn't actually edited C300 footage? The codec is really, really good. It holds up really well.
Stop looking at paper specs and download some footage. Yes, 4K might have more problems with that codec, but equally likely, it will be the same, or it might be better.