I know it is possible to take different sized photos as well as black and white photos but how do you do it?
How do you know this is possible, with such sureness, if you haven't done it yourself? If you know because someone told you they've done it in their game, then perhaps you should ask them how they did it. OTOH, if you know because "the Prima guide says so", may I suggest you rip that page out of the Prima guide and leave it in your bathroom. It may come in handy if you run out of toilet paper.