Excellent analysis AV8- it was obvious extensive use of distortion was made by Photoshop, so what this photographer has produced is not a 'picture', but a distorted work of art not belonging in Airliners.net. Unlike architects who try and correct for distortion to make things look like they should in real life, he intentionally distorted one of his pictures to produce 'artwork'.
SB, the 'ellipses', I assume you mean curved runway/taxiway edges only underwent a tiny bit of expansion/compression depending on height from the bottom of the picture, so there would not be much change in shape. I think tghe picture is a genuine photograph unfortunately spoilt by the photographer himself. There is a VFR lane to the west of LAX as far as I remember- the 747 would have a pitch angle of 10-15 degrees. From the quality of the picture it would seem to be a high strength good quality telephoto picture undergoing extreme distortion.