Taking a photo with a tablet is an act of desperation; it says 'I forgot to bring a real camera but I want this shot so badly, I don't mind how silly I look'.
In keeping with that principle, both the front and rear-facing cameras on the Surface Pro are 1.2MP cameras with poor low light performance.
They take the kind of disposable snaps we expected of camera phones five years ago, rather than the acceptable images you can get by looking silly and using the iPad 4 as a camera.
However they're much better as webcams than for still images, recording at 720p. The extra wide angle of the front-facing camera is great for video chat in Skype, and the colour balance from the Microsoft True Color system and autofocus do better than all but the very best built-in webcams in other notebooks.
The rear camera is good enough to show the person you're chatting with a quick video view from your window.