Thanks. Raws are here 
https://drive.google.com/drive/folders/1zzjVOqO3pnwZu92LdJuUvTYoCOggfRk6?usp=sharing
I am using 10bit rec2020 raws. But I noticed this pano was shot with 
auto-exposure, and I was using Photometric > High dynamic range, fixed 
exposure. I wonder if that causes problems?




On Thursday, April 20, 2023 at 4:29:54 PM UTC+1 T. Modes wrote:

> irthoma...@gmail.com schrieb am Donnerstag, 20. April 2023 um 14:27:33 
> UTC+2:
>
> My process is to export raws from Darktable with everything disabled, but, 
> lens correction.
>
> <snip>
>
> 5: Photometric: High Dynamic Range, Fixed Exposure.
>
>  
> This will only optimize vignetting correction. In case of images with a 
> low dynamic range (high key/low key images) this may not result in correct 
> results and may need manual fine-tune. This blurred spot could be the 
> result of an improper vignetting correction.
> But when you already corrected this in the raw converter this step may not 
> be necessary.
>
> > Using built-in, instead of enblend, gets rid of the blotchy brightness. 
> But, this produces it's own problems with seams and hard edges 
> The internal blender has also a second blend mode in case there are 
> remaining seams. This one has to be selected in the blender options.
>
>

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