As you can see it's not super-pretty nor styled well. Superficial, but worth noting since you do have some editor styling (like the quotes).
Can you paste the plaintext code from the editor for the captions you're referring to?
I'm just saying that when you add captions to an image it doesn't look very pretty (as per the image).
See video here: http://d.john.do/fjJt
Code here: http://d.john.do/IOzN
Thanks for the video! Do you have a screenshot or example site with a "pretty" caption?
well, a great example is just the captions in the editor for twenty twelve theme and the rest of the yearly-released themes.
Ah, I see now.
I agree this should be fixed. @saddington Thanks so much for point this out. :) I'll add this as an enhancement and get it fixed before the next release.
Improve Visual Editor Style images with caption. Fixes #130.
Fixed. The visual editor style for images with a caption now looks like this, which very closely matches what it looks like when the post is published: