That's a very nice scene and there is a very effective sense of depth, esp. among the people sitting between the rocks. I wonder if the saturation can be toned down a bit giving it a more natural look... that is just my preference though.
Halos are not a necessary consequence of HDR renderings. They can be hard to tame, esp. when deriving your HDR rendering from a single photograph. While Photomatix does provide dramatic results in a quick and easy manner, it is not the most effective tool for subtle renderings.
The more actual exposures you make in the camera the better your results will be. There is, of course, a point of significantly diminishing returns (and increase in processing time.) When these multiple exposures are combined and the contrast and saturation controls are near natural you should normally not see any halos.
Hope that helps,
Nikhil
Last edited by Nixarma; 07-10-2007 at 01:27 AM.