I don't believe Premiere should deinterlace, but rather reconstruct the frames to their original progression...
One clue would be the output speed once you save the file...
Deinterlacing usually takes more time, as there's calculation involved.

As far as the difference between 30F and 60i go, usually your final delivery is the answer to that question.
30F is preffered for web, or progressive outputs. It compresses better, and is sort of in the middle of 24F and 60i...
60i gives the video look, but it also focuses quicker, needs less light, and is the output format for DVD video....

Lots of info. kicking around about Film, NTSC, and other framerates...

Good luck!!!

Premiere deinterlaces it alright, take a look at this:

http://huntnriggs.com/images/deinterlace.gif

Any other ideas?

Premiere sees the 30f footage as interlaced, so in a progressive project it is automatically deinterlaced. Consequently, the video looses much detail and the editing is much more processor intensive. So the key here is keep Premiere from deinterlacing the videos. How is this done?

Mitch started a new thread on the same subject in the Premiere Pro forum, so I'll close this thread and point further discussion on the topic there:

http://www.dvinfo.net/forum/attend-w...e-pro-cs4.html

Mitch: the gif images from 17 Oct don't really help as you didn't describe the workflow and settings used to produce the "after" picture. It doesn't really look like interlace artifact to me, though.