Rick Burnett
Section Moderator
I was working for Canon during the event at Paramount, and I can confirm that the SDI out is 8-bit. From the filmmaker's perspectives, none of the films presented ran into any problems with the in-camera 8 bit codec, and I believe them. I shoot and edit with the Canon XF codec on a regular (read: weekly) basis, and haven't once seen posterization across any gradient either before or after color grading. But don't take my word for it, watch the films from the announcement - there was a lot of heavy post grading and digital special effects in some of them. This idea that 8-bit is somehow completely untouchable in post is quite frankly 100% bullocks.
I can also say that this camera is the first in a family of cameras for the EOS Cinema line.
Personally, I think $20k is a bit too high for this camera. But $15k would be a bargain for what it's capable of delivering, especially since I wouldn't have to pay for an LOG format upgrade or an external recorder.
There is posterization in the videos that have been released online, including aliasing as well. Now, is that a product of the release compression? Most certainly could be, which is why I haven't really commented much about it yet. I've seen my fair share of demo videos that when encoded properly look totally different. It's just an unknown. Just like when I've heard people talk of no posterization on the AF100 or no noise, or no aliasing. I've caused ALL of those to happen with the AF100 out of the box. It's just a question of what settings you want to use, and what trade-offs you want to take. In the end, I had a beautiful image on my AF100, that didn't really suffer often from any of those issues. Albiet it was a bit softer and less saturated then I wanted, but that was the trade-off I took. Certainly with the C300 there is a lot of unknowns still. I just don't get how a codec and hardware in a $3500 camera that already supports that bit rate internally gets a camera up to $20k in price. Doesn't make any sense. Even take into account that that $3500 camera has a lens that comes with it as well, and electronic controls to control it. It would be different if it were something new, or higher bit rate, but I don't see that. My FS100 can even do 1080p60 and it does a really good job of it.
All that said, I have my experience with 8-bit codecs as well and the biggest issue that hurts 8-bit tends to be extremely clean footage. I agree that 8-bit streams can mask those issues if through noise or processing you can dither between the steps so as to minimize the visual appearance of a step, but the cleaner you go, to keep the image clean you are going to need more steps. The videos I watched that were shown didn't show me the extreme grading I've seen where these issues pop up. Maybe Canon has some magic that makes a difference. I just don't see this $20k difference in the footage.