For this I chose a gradient from green to red and, over that, I imposed two sets of concentric disks, one green and one red. Both of them consist of smaller and smaller disks starting with pure red (255,0,0) or green (0,255,0) and graduated in 5% steps. If you care to examine this you'll see that even the human eye can't distinguish 100%, 95%, 90% green or red from each other. We'll see if the software can. Over the disks I drew sets of thicker and thinner red and green lines with red mostly over red and green mostly over green. There's a certain softness here from converting the tif to jpeg (uncompressed) and then posting on the blog. In the original the circles are crisp and sharp (where the human eye can distinguish between them) and they're evenly colored without blotching.Let's see what the Photomatix Details Enhancer default settings can make out of this:
There's good separation here between nearly all the red and green disks. The gradient is even and without banding. But there's severe haloing, pinching, and flaring. And once again Photomatix is fooled by straight lines and performs the usual compartmentalization on unitary background objects.
I tried to fix some of these problems and here are the settings along with the results:
The haloing here is somewhat reduced and the separation of the disks (where they're not compartmentalized) is very good. But I could find no setting that would get rid of the flaring and pinching.Many of the Dynamic Photo HDR results resembled each other. Let's start with 'Photographic':
We've seen in the past that Dynamic Photo HDR (DPH) tends to band on the gradient and that's what we see here. The green and red gradient is also somewhat reduced in saturation from the original (PX did the same thing). The red and green disks are well-separated but not as good as they are in PX. What we don't see here is the compartmentalization, the haloes, and the flaring that characterises PX's results.
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