Can you guess which is HDR? I thought the first image was, since the areas of shadow seem to be lighter. I didn't like it. To my surprise the second image, the one I prefer has had the magic math applied. It seems more like why I saw that evening.
When I use the HDR feature, I am always careful to check the results. It is not always better. But usually, at the very least outdoor photos are tweaked so that the sky is not blown out.
Paul/ BlogPress/ iPhone