Ok , I'm sure many of you have GTA:LCS and E. Cater's CheatDevice and have taken advantage of the Screen and Video capture features. Well, I have some tips (I'm not sure how obvious they are) that will give you some amazing pictueres. I'll start off with the more obvious ones then move on.
Take your picture in an alley or somwhere where the the defualt camera angle looks different then if you were just driving on a highway.
Use the anolog stick(while holding L i think?) to change the angle of the camera.
Ok, you have to have quick finders for this one, but what you need to do is get infrot of what you want to capture, look, right at it, get up the screen capture thind and RIGHT after you press X to take the picture, press O to get up you weapon.
Now when your in a car you can get it so it is about to take a picture, you can hurry up and press either trigger(L & R) Buttons, or even both
(I smashed the trunk off a SUV before doing the one below & see the airport)
And now for my favorite, for this one get in a car and press selecet till it goes to that view where it is like your the front of the car (not cinimatic)

You can even do this with a plane, but it does take a few trys to get the GREAT pic
Take Pics while going on those jumps where it slows everything down!
And this one is a given but use Cinimatic View while driving
(For the one below the car i was in, was hidden by the tree in the center)
So, I hope you can use these tips and even post some of your own!