This looks like a new set of screencaps by the folks at grande-caps. They did great shots of Enigma & Gosford Park previously. There was a set of Emma caps done earlier, but these are made from the Blu-ray of the film so the quality is probably better.

http://grande-caps.livejournal.com/1144041.html

You can download the whole set (2,797 caps) or go through the gallery and just choose the ones you want. Be warned though, they're very large pics in png files, so the download of the set can take a while.