NOTE: ARTICLE UPDATED BELOW
Fellow FresHDV writer Kendal Miller was recently looking for a 10-bit codec to support a project’s convoluted chromakey workflow. And it turns out that Blackmagic has them freely available, for both Mac and PC platforms. Handy. Look for the links on the right column.

And while I’m on the subject of uncompressed codecs, here’s a few codec tests by Mike at HD4NDS.

UPDATE: Mike Curtis gave me the heads up on the Sheer codec from BitJazz. He wrote about it earlier this year:
“I used to use the BlackMagic codec for cross platform work, but it
introduces a very noticeable shift in the luma (brightness) of the
footage, so this time I tried the Sheer codec from Bitjazz. It is
mathematically lossless QuickTime codec (exact match of the source
material) that is usually around 40% smaller than the Apple or
Blackmagic codec. Yeah, the files are smaller. Yeah, the video looks
and is exactly the same. No, I don’t know how it works, I just trust
that it does.

(I tried to capture directly to Sheer, but ended up with half sized
files (640×360). This is a known issue with BMD cards and Sheer, and
Andreas Wittenstein, the developer of Sheer, is working on it.)

There is a free reader version of the codec downloadable for QuickTime
(and an AVI version is under development) from the site at the link
above for both Mac and Windows, thus it’s cross platform.”

He also mentions that Apple has updated their codec recently, reportedly to fix the issue of gamma shift in AE.

So there you have it. More choices.