There is a nice video out that shows what we might expect to see during the approach and encounter with the comet 67P/Churyumov-Gerasimenko.
As the video showed the comet is just now becoming visible and in fact Rosetta did get a couple of pictures of 67P/Churyumov-Gerasimenko. Rosetta is about 5 million km / 3.1 million miles from the comet and this image comes from 60-300 second exposures. Nice and steady!
The camera is working great! I especially like the globular cluster! It is M107.by