[smokingfrog]

I don't see the odd artifacts in the wall on this one. But the stone in the middle of the wall on the left side certainly looks a lot different than on the right side. The background in the middle of the picture is all washed-out too.

[Gene Eric]

The shadowing is all screwed up. Obama’s right leg is not casting any discernible shadows against his grandfather’s left leg.

[thecodont]

Grandma’s red suit is not reflected on BO’s black leather jacket.

[Tex-Con-Man]

The sunlight is being filtered through a tree which is creating an uneven shadow effect on Obama and his Grandparents. The background seems to have full sunlight, washing it out compared to the foreground.

As far as the wall goes, if the purpose was to add Obama to the picture, there would be no reason to edit the wall on the left.

[Walkingfeather]

Also wonder if the spear shaped background of wall was inserted in between Obamas left arm and body. It seems unusually bright shining through his arm to me. Wonder if that pattern was cut and pasted from another part of the wall and put there and if it could be matched as each part of that wall is like a fingerprint in its uniqueness. If it is copied then you know it was a composite.

[AFreeBird]

The washed out middle of the background is not surprising. The subjects are in a more shaded area, whereas that part of the background looks to the sky through less dense trees. You’d want to make sure your subjects are properly exposed, and that would result in the lighter part of the picture being over exposed, or washed out.

[Crucial]

Oops, that’s not grampa’s hand. Notice how his arm is straight vertically next to his body and the somehow stretches all the way above Obama’s shoulder. He’d have to have an extra elbow and extra arm length to accomplish that.