Tom wrote:TZuck wrote:ProRes 4444? this would be nice if the sensor was capable of doing 4:4:4 chroma (no)subsampling.
here's an article that explains what I mean:
http://www.xdcam-user.com/2011/02/when-is-444-not-really-444/
so to recap, if the BMCC were to record ProRes 4444 (really it should be ProRes 444, unless the camera can film transparency) it would be 99.99% same as ProRes 422 HQ, but eat up more space on drives. But if you really wanted to eat up more drive space then film in RAW, because at least that give you more bit depth to play with in post. If the point is to improve the BMCC I don't see how adding ProRes 4444 does that, same with Cineform RAW, I don't understand why you would film in it.
1: the sensor does not perform any chroma subsampling.
2: Bayer pattern sensors and chroma subsampling are not the same thing and should not be directly compared. Similar ideas, but very different thing with different implications.
3: Cineform RAW would be beneficial because the data is bayer data with very good, visually lossless compression with a high colour bit depth. It means the benefits of not having pre-debayered video footage such as with DNG, the benefits of high colour bit depth such as with DNG, but with much smaller files - and of course all the cool things you can do with cineform such as with their meta data.
1.) It would appear as though i've been mistaken. gone and messed up my words...
2.) correct. that being said ProRes 444 still should not be noticeably better quality coming from the current camera. and if you want a true 4:4:4 image from this camera the resolution would be 1200 x 675. Canon has this on the c300 for 1080p only because the sensor is 3840 x 2160. The point of a bayered sensor is to debayer it. software is still guessing at what was there, and any other way to debayer is simply preferential, which is your point in #3? that you can decide how it gets debayered?
3.) You've made valid points. carry on while i go and educate myself more.
- TZ
Visual FX and Post Production Artist
Screenscape Studios
Visual FX and Post Production Artist
Screenscape Studios