I have to agree with the general assumption over at Gallifrey Base that all those Doctor's weren't in the same room at the same time for that picture (indeed, I wouldn't rule out the possibility that Colin and Sylvester are sitting on the same chair...).
It didn't occur to me that that might not be an authentic photo.
Now that I look at it again, I can see that it's good, but there are little things, like lighting sources, that don't quite
Still, it's a better Photoshop job than the collector's edition cover to The Light at the End
. That image of the five Doctors posing dramatically in a circle makes the Avengers
film poster look competently done.