<<<> i had somebody (who is generally right) tell me the other day
> that Animation is a JPEG codec, and therefore Lossy.>>>
I'm not next to a machine, but you can do the math.
"Uncompressed" PhotoJPEG results in an approx 3:1 compression, which in the JPEG world is invisible. Every picture frame is approximately 1M in size. Multiply ad-lib.
The numbers will not come out perfectly because there are non-damaging compressors--LZW that's embedded inside TIFF files for one. If you TIFF an image with a lot of pure blue sky, for example, LZW will do some amazing things with the file size.
Just to throw some mud in the game, we did find some damage that PhotoJPEG does that nobody caught up until a few weeks ago. I'm designing a test signal so we can quantify it better.
Koz