Hey Toke. Without turning into a big ole mathematical & technical shootout here, I just use my eyes. When the footage is imported over firewire into dv50 and then effected in AFter Effects, the footage tends to look a little more lossy than if I ‘import’ as you say or ‘digitize’ or ‘capture’ or (whatever term you want to use), than if I would bring in the footage uncompressed from the beginning. Also, I know that bringing it in dv50 over firewire is supposed to be a 1:1 transfer of all the digital information, but somehow when bringing it in over SDI the details are are little more smooth. There are less jaggies and the video looks a little smoother. I’m not talking a huge significant amount, but enough to see in my very discerning eyes. Add to that rendering out multiple iterations out of After Effects, I need to keep the video looking a s good as possible. i don’t know where the ‘errors’ occur, I just deal with them and know that i have kept the highest and best quality that I possibly could along the way. If I were doing a complete cuts only piece, dv50 would be fine, but I never do a cuts only piece.
Color space and color space conversion from fcp to AE and back is a totally separate issue.
No, I have not seen the Ultrium 3, but I’ll keep it in mind when and if we go tapeless. Don’t forget, we aren’t buying DVCPRO HD tape, we are buying regular old DVCPRO tape (AJ-P66MP) The medium size Panasonic DVCPRO tape with a yellow lid. We get approx. 33 minutes per tape shooting dv50.