On 2019-11-25 22:18, Niranjan Rao wrote:
Ubuntu 18.04, darktable 2.6.2
Curious... why not DT 2.6.3?

More and more research I do, I am getting convinced that this is a problem with one of the updates of darktable or somehow my settings are screwed up.

I have photos from same raw exported at different times. Please check the photos of two giraffes  at https://photos.app.goo.gl/K35BT8X5HGhSzwQj6. One was exported back in August. I don't know if I got a darktable update since then or not. Exported same photo with same style today and it shows artifacts.  None of the older images show these geometric patterns and same image exported today shows it, no style changes since then.


I can start with scratch, but afraid of loosing all my tags and edits. What will be easiest way to restore darktable to it's default values without loosing my edits and tag information.


Tags are stored in the .xmp files but why not trying to simply test without deleting anything

Check man darktable

If you start from command line like this

darktable --library :memory:

it won't read the library so you can try opening the same image and exporting to see if it will make any difference.

Regards,

Niranjan


- b
On 11/13/19 10:24 PM, KOVÁCS István wrote:


On Wed, 13 Nov 2019, 17:23 Niranjan Rao, <nhr...@gmail.com <mailto:nhr...@gmail.com>> wrote:

    Darktable version: 2.6.2 on Ubuntu 18.04

    I am seeing patterns in the sky


To me, it looks like Jpeg compression artifact. It's a high-res photo, yet only about 200 kB. Have you tried exporting into png or tiff to see what the image actually looks like before compression? If you are no artifacts in lossless files, try exporting at a higher Jpeg quality setting, and, if you really need small files, use a lower resolution instead of increasing compression (lowering quality).

Kofa


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