I've just come back from Macau!
I seldom go traveling, and therefore I seldom take out my camera and takes some photos for new places that I have visited.
and therefore, there is no special apps in my phone that I can use for taking beautiful photos.
So, in the hotel, I access Android Market and I find this app in the top of the list - Camera 360.
This app is developed by Chinese, I don't know if there is English version, but even if you don't know Chinese, you won't have any difficulties.
The UI is pretty simple, just 6 menu keys. and each stay for some kinds of special effects, including effects when you take your photos, and effects to be applied after you have taken the photos.
I know there is a lot of similar apps on the market, but the reason I would like to recommend this app, is that it group most of the function into one single app. There are much more effects than the other similar apps that we can found on Google Android market,and it provide function eg photo editing, croping, and even color editing. These functions are not well developed in the other apps, and therefore you should give this app a try if you are not satisfied with those apps!