Sunrise Sigmoid Service

Howdy all!

Storm season has come to the west coast, and in an attempt to stave off the long dark, here’s a sunrise on a beach to remember warmer days.

DSC06909.ARW (23.9 MB)

I’ve never really messed around with the tonemappers in Darktable before, but my first edits of this photo resulted in a much pinker sunrise than I had seen when taking the shot. Never really swapped off Filmic before, but gave Sigmoid a shot since I’ve seen words like “sunset tonemapper” used with before. Sigmoid fixed some of the issues I had in the photo, but made other portions less appealing when doing a 1:1 swap. Would definitely be curious to see how others play around with the tonemappers, and when to “apply” those tools when starting an edit.

Filmic Edit


(like the sky and sand, sunburst is too pink though. Unfortunately, I did a silly thing and overwrote the sidecar with the Sigmoid swap)

Sigmoid Edit


DSC06909.ARW.xmp (23.6 KB)
(just turning off Filmic and turning on Sigmoid makes the sunburst “right” to me, but the sky washed out, and not the happiest with my recovery efforts. Personally like the more dramatic sand that came along for the ride, but will acknowledge it may be a little much for some)

This file is licensed Creative Commons, By-Attribution, Share-Alike.

5 Likes


DSC06909.ARW.xmp (8.4 KB)

First stop was comparing highlight reconstruction modes, because they can over-pink things.

I then tried some variations with sigmoid - preserve hue first; then specifically red attenuation.

This one is the “neutralize colours” auto optimizer in the color balance module. It does reduce the pinks to non-existence, probably much more than you wanted! It looks much better - and less de-pinked - full-size on my callibrated monitor than in small jpeg here. I may yet have another go in a compromise between this and a too pink rendition.

3 Likes

You can also go to v5 of filmic with no color preservation and then do your own gamut management with the color tools…the pink can happen in v6 and v7 of filmic as there is code in there to control for hue shifts…you might also get it sorted in v7 with the highlight saturation slider but that doesn’t always work …

1 Like

I hardly use filmic. Sigmoid satisfies my needs completely. The difficulty on this pic was in my opinion the highlight reconstruct module.


DSC06909.ARW.xmp (19,7 KB)

3 Likes

My experiment without Filmic and Sigmoid at all.


DSC06909.ARW.xmp (51.6 KB)

2 Likes

You got severe channel clipping and therefore corrupted colours. Just look at the colour transitions around the Sun.

Yes indeed, that’s why I think Sigmoid works best in this case.

My version…(filmic).

DSC06909.ARW.xmp (16,9 KB)

2 Likes


DSC06909.jpg.out.pp3 (28.1 KB)

Awesome shot to edit in RawTherapee 5.11 and I get great quality out of RawTherapee.

1 Like

16:9 Crop


DSC06909-2.jpg.out.pp3 (28.1 KB)

2 Likes

I suggest the smooth preset in Sigmoid

Tried to keep the early morning atmosphere.


DSC06909.ARW.xmp (22.3 KB)

6 Likes

Throw the old color reconstruction module at this edit of yours just for fun…if you tweak that you can often dumb down and blend in that blown out area in a pleasing way…

For me, Sigmoid with preserve hue at zero and experimenting with the skew slider is my go to for sunsets/sunrises.


DSC06909.ARW.xmp (11.4 KB)

Here is my attempt using Filmic V5 with no chrominance preservation which is the method I would use for a sunset/rise with filmic.
DSC06909.ARW.xmp (11.5 KB)

My filmic v5 version :slight_smile:


DSC06909.ARW.xmp (18.0 KB)

and much less yellow


DSC06909.ARW.xmp (18.0 KB)

One other look…


DSC06909.ARW.xmp (16.1 KB)

With ART 1.21.1
DSC06909.ARW.arp (14.5 KB)


Greetings. Roberto

Another attempt.


DSC06909.ARW.xmp (40.1 KB)


DSC06909.jpg.out.pp3 (28.2 KB)
RawTherapee 5.11 update to my previous edit.