In this post I'll quickly go over all the features it has - starting the app, allows you to select which image you want to edit:
You can either select an existing image, or take a new one... Once you've selected the photo you want to edit, you'll get a neat interface with everything you need right there:
The next one you'd need would be a cropping tool - we always get stuff like fingers or bystanders that spoil the photo, so cropping the pic can easily fix that. It can even turn a crappy photo into a MASTERPIECE!!!
This little app also have several selection related tools and features, which allows you to make edits to only certain parts of a photo:
At the bottom you'll see a back and forward button, so you can undo and redo any steps you take... Next to that you have a paint pallet icon, which gives you options to play with the brightness and contrast settings:
The magic wand tool gives you options to make some blur related changes to your selection (you need to make a selection first for this to work):
The final tool in the list gives you some other effects you can apply to your pic:
So there you have it, that covers the stock standard "Photo editor" that comes by default with the Galaxy S2 - it's got enough to allow you to do the basics, but it won't be used by professional photographers :) (they'll anyway rather use their PC or Mac)
I'll have a look to see what alternatives to the standard photo editor there are out there, and maybe do some reviews on them too.
Till next time!