At what point does one really NEED 10-Bit 4K? How serious does your grading have to be for 8-bit to not work well? Is Sony's 8-bit slog 4:2:0 really that prone to banding? (I read through the recent thread about "converting" 8-bit to 10-bt using noise removal software, and thought it has some potential for Sony cameras, although not technically converting to 10-bit.) Thanks in advance.