Originally posted by Racer X 69 I would think that having the sun off to the right or left would make for better modeling of the subject and create a better sense of depth.
Having the sun (or any light source) directly behind the camera creates a very flat scene, with no depth or modeling of the subject.
I think for many of us shooting local wildlife, we're happy just to get decent light at all.
In this case, the sun was directly behind me, but there was enough textures in the scene for definition. (A 400/5.6 + A 1.4x-L)
And here's one where the sun is to the right (same lens combo)
And here's one where the sun is to the left (Tamron 360B + A 1.4x-S + AFA 1.7x)
And finally here's one where the sun is low over my left shoulder, touching the treeline, and slightly diffused by clouds - which is not great for detail but I love the warm softness of it. Tamron 65B + A 1.4x-L