If your speaking of an "automatic send to Dropbox" feature or a "Sub-menu" feature to share it with Dropbox, then no there are no features that do that as of that.
Check out www.sugarsync.com instead of dropbox. I haven't tried it myself, but it says you can sync any folder, not just the dropbox folder. They have a free 2GB account, limited to syncing two "computers" though.
For Dropbox, last I heard is that the dev is working to enhance the Android version to do that, but nothing yet. You can only take the photo using the Dropbox app, but you cannot transfer photos from SDCard to the app, yet.
I have SugarSync - the Android app is great. When I start the app, it asks if I want to sync my latest pictures (and gives me a count of how many pics that is). That's a huge time saver.