Hi,
I got enormous difficulty in tone mapping this image.
Tone equalizer works great except that it leaves a halo around the dark right corner.
Is anybody able to use tone equalizer here without halos?
Question addressed to darktablers but feel free to post renderings from other software.
This file is licensed Creative Commons, By-Attribution, Share-Alike.
I just turned up the edges refinement/feathering slider a bit, seems to have more or less done the trick.
My use of tone eq here is very light, so it is not the cause of the problem. Also, first time using the retouch module - will be peeping at others xmp’s to see how they handled it.
IMG_7963.cr2.xmp (58.0 KB)
darktable 3.2.1
Maybe not.
I disabled TE and noticed that the halo was still there.
Then I disabled filmic and it seemed to have disappeared, but then I had a dull underexposed raw, so I can’t assure for certain that it wasn’t there (but if it is, what would cause that? Lens?)
I’ll take a lool at @Thomas_Do edit later, which seem to have nailed it.
I event tried a basic edit in Art but the halo was present. It seems the high contrast between well defined edges presents a challenge to tone mapping operators (filmic is included in this category, right?)
@gadolf are you using haze removal by any chance? If so, that is known to produce halos if pushed too far…
I was. I disabled it and the halo almost vanished, but I think I still can see it, but I’m not sure.
IMG_7963.jpg.out.arp (10.7 KB)
I agree, there’s some. Fwiw, I was talking in general terms, perhaps dehaze (and not filmic) is the culprit also in darktable
Yes its still there. I removed haze removal on my edit for the same result - became less obvious, but still visible.
Filmic tonemaps, yes - but this halo is present even with filmic turned off (just less obvious). I tried two demosaic algorithms (amaze and vng4) and it was present on both. Leads me to believe it is somehow caused by the lens.
tone equalizer → masking → preserve details - no. The equalizer mask looks better to me this way. Does this help minimizing the halo you mention?
IMG_7963.cr2.xmp (13.8 KB)
It certainly does, although this setting reduces its no-halo effect if you bring up the blacks in the exposure module.
I also liked @wiegemalt’s edit, a very minimalistic one, but very effective.
Common to both, low contrast. Which seems kind of obvious it there is an halo from start.
