Lightroom Classic Dehaze work only in small area with strange result

[Drugstore]

With update to LR-C 12.4 (please recognize in system parameters that I switched back to 12.3 to be able to keep working) the Dehaze Function behaves strange. There is a small amount in the middle of the image where a strange effect is to be seen. I provided two screendumps with min and max values of the slider. Please note that the image isn't edited but only to show effect better, otherwise it's for the bin 😉

Lightroom Classic-Version: 12.3 [ 202304101834-a085245c ]
Lizenz: Creative Cloud
Spracheinstellung: de-DE
Betriebssystem: Mac OS 13
Version: 13.4.0 [22F66]
Anwendungsarchitektur: arm64
Anzahl logischer Prozessoren: 10
Prozessorgeschwindigkeit: NA
SQLite-Version: 3.36.0
Integrierter Speicher: 32.768,0 MB
Für Lightroom verfügbarer phys. Speicher: 32.768,0 MB
Von Lightroom verwendeter phys. Speicher: 1.776,5 MB (5,4%)
Von Lightroom verwendeter virtueller Speicher: 424.242,1 MB
Cache-Speichergröße: 2.362,1MB
Interne Camera Raw-Version: 15.3 [ 1451 ]
Maximale Anzahl Threads, die Camera Raw verwendet: 5
Camera Raw SIMD-Optimierung: SSE2
Virtueller Speicher in Camera Raw: 1404MB / 16383MB (8%)
Physischer Speicher in Camera Raw: 1474MB / 32768MB (4%)
Standardvorschaugröße: 3456 Pixel
Monitore/Anzeigegeräte: 1) 3456x2234

Informationen zum Grafikprozessor:
Metal: Apple M1 Max
Anfangsstatus: GPU zum Exportieren wird standardmäßig unterstützt
Benutzerpräferenz: Automatisch

[JohanElzenga]

Can you also post a screenshot of how version 12.3 behaves on the same image? Do not attach them, but insert them in your post using this button . I see no issues with Dehaze in version 12.4 but I have not tried it with these extreme settings on such an extreme photo.

[Drugstore]

They are already deleted but I can tell you that dehaze works evenly across the whole image. I've attached a similiar example from 12.3 where you can see that it looks like it should.

[JohanElzenga]

Is this 12.3 or 12.4? I do not see this localized problem that the other image apparently had. Dehaze seems to work on the overall image here.

[Bob Somrak]

I agree with  @JohanElzenga. I do not see any issue with Dehaze as you show.  Post one of your RAW photos and we can test it. It would be preferable to use the first one you posted  as it seems to show the issue more clearly.

[Drugstore]

This is the 12.3 LRC as asked for. I added the information to be more clear. Thanks.

[JohanElzenga]

This is the 12.3 LRC as asked for. I added the information to be more clear. Thanks.

By @Drugstore

What we obviously like to see is a comparison of the same image in both 12.3 and 12.4 so we can see the alleged difference.

[DdeGannes]

Just my thoughts, Haze is an atmospheric phenomena as described in the attached screen capture.

The Dehaze feature in LrC is designed to correct this undesirable condition if it is present in a particular image. I would suggest that one should choose images that display this effect.

I rearly use Dehaze at the extreme settings as + or - 100 and work with + or - 15, as you will experience "wonky" effects.

I live in Trinidad and Tobago which is located in the Caribbean just off the coast of Venezula and at certain times experience the effects of Sahara dust that creates severe haze effects.

[DdeGannes]

Example image +15 Dehaze, +100, -100.

The image is from my apartment, the mountains in the background are in Venezuela about 50 kilometers to the west.

Notice the Dehaze actually sifts the color tone towards Blue while reducing the Haze.

[Drugstore]

Thanks, the dehaze function is not reduced to use for natural images afaik. I have > 600.000 images in my catalog and use it whereever I need to. So I know the behaviour also for other type of images and I recognized, that for certain images it now behaves different so I had to rollback to previous release of LRC.

[JohanElzenga]

Rolling back to a previous version may be a temporary solution, but can't be a permanent one. So it may still be worth posting those images so other people can help figuring out what is going on.