13

Within the white balance module you can select "spot" from the preset drop-down list to remove color cast based on a selected area. By default, the entire image except for a margin around the edges is selected; better results are usually obtained by selecting a part of the image that should be neutral gray or white (be careful about including any areas with ...


8

While darktable is an increasingly powerful piece of software, one of its rough edges is the fact that it doesn't try very hard to produce a good default "vanilla" rendering of the RAW files from the vast array of cameras that produce such files (understandable, being an open-source project with limited volunteer resources). By default, it applies a "base ...


5

This seems to be intended behavior in Darktable 2.6 Actually treating the group as a selection of two photos makes sense in most cases (Rating, Deletion, Move etc). However the good developers of DT knew that every change breaks someone's workflow so they added a new collection option named group leaders that allows the user to access the old behavior.


5

"darktable is released under the terms of the GNU General Public License Version 3 or later." -https://www.darktable.org/about/ It is free software, unlike Lightroom. As a point of clarification, it is not illegal to download Lightroom either, as long as you have paid for it. If I'm reading between the lines of your question correctly, you are asking if ...


5

For manual channel-by-channel adjustment, you could try the color balance module. I don't think it's enabled by default, so you may need to activate it using the "more modules" button.


5

Yes, Import > Folder is the right way to go, and you will not duplicate your collections by doing this. The information Darktable creates resides in the .xmp files inside the folder and is simply re-read every time the folder is (re)imported.


4

I'm not using Darktable myself, so I can't check it myself but this might be a re-occurrence of a bug that has been fixed two years ago. You might file a bug-report with them and while it's been discussed/fixed, you can revert back to the previous version to keep your stuff functional. Edit: Checking the documentation you might try to call darktable-cli ...


3

Since I didn't find a way to do that with darktable, I developed a script to use darktable-cli and to interpolate between darktable's parameters: https://github.com/ziadloo/darktable_transition It's not much but it does the job (at least for me).


3

That looks to me more like noise, particularly chrominance noise, than posterization or banding. But the two things can look very similar at times, particularly if too much compression was used when converting to JPEG.¹ There are some noticeable compression artifacts near the edges between the red sleeve and the background. When one underexposes a shot and ...


3

I've found what my issue was. In Darktable, I was creating a style based on the history of one image and then, I would select all the images in lighttable mode and apply that style to all the images by double-clicking on the style. Then I would export those images. Seems like, this is not the way to work with Draktable. The proper way of doing this is to ...


3

When raw conversion applications first started appearing as consumer products that any digital photographer could buy and use, the primary users of such products often had training and experience processing film and printing from that film in the darkroom. Many of the tools offered by photo processing applications are presented in a way that is ...


3

A quick way to do it, which does not create the exact same result, but it's turquoise alright, is to use the color correction module and move both the white and the black dot to turquoise. The colorize module with a blending mode of overlay also produces a similar effect (here I didn't add the drawn mask to exclude the subject, you'll have to do that ...


3

You can give 5 stars to all images in you collection (select all, then press key 5), and then use the following script to delete all images that have a ranking of 1 (default ranking). for f in `grep -l 'Rating="1"' \`ls *.xmp\`` do rm ${f%.xmp} rm $f done This assumes you have not changed the rating of the images you have removed. Alternatively, if ...


3

Darktable is free software and it is perfectly legal to download it in entire EU. About download in Germany - download the software from official web site or from official mirror site. About Lightroom - it is legal again if you download it from Adobe web site. And its legal to use it on the time of trial period. Do not use p2p/torrent to download LR ...


2

My guess is you're using denoise (profiled). If so, then you should read darktable's manual section on profiled denoise, where it is clearly stated that you should use a blend mode to avoid that effect you've shown in your examples that look smeared and painterly. To summarize: Use non-local means for luma noise, combined with blend mode ligthness or HSV ...


2

Missing lenses are probably added in the latest version of lensfun. The problem is that lensfun don't get updates via the packet manager. To update the database you need to run this command lensfun-update-data as root.


2

I worked on a similar scenery and solved it mostly by tone curves and colour zones. This is my start image. It was a jpeg taken handheld with a Canon EOS 80D and Tamron 18-400 3.5-6.3/f - 1/60 seconds exposure - 3.5/f - 4000 ISO Definitively, I didn't go the easy way on it, but I think it might be useful to know some useful darktable's modules. (Exposure ...


2

Just add a style preset with: exposure: auto white balance: camera (or spot - whole image) sharpen: defaults base curve: defaults With that my severely underexposed pictures will look nice out of the box. (I always use my native ISO 200, and will rather use Darktable to make them light than to do it destructively using ISO in-camera). This is basically ...


2

The interface for applying styles in darkroom mode is the button on the left side of the bottom toolbar below the image display (if the toolbar is not visible, click the white triangle to toggle it). After applying and viewing the style, you can use the Ctrl+z shortcut to revert to the previous history stack before applying a different style. If you want to ...


2

darktable-cli $src $xmp $export [options] --core --library ':memory:' --configdir '/dev/shm/$uniquevalue' It seems that there's also a data.db in the --configdir parameter (default: $HOME/.config/darktable) which also gets locked by a darktable session. This probably holds user preferences and styles, but if an xmp sidecar is specified then it's not ...


2

Unfortunately, you can't run multiple instances of darktable at a time. If your script is running 4 instances of darktable-cli in parallel, there's your error. You need to serialize your script to run at most one darktable-cli at a time. Having some kind of file locking mechanism that waits for the old darktable-cli to exit is needed. An example of such a ...


2

Well, a literal answer would be that you could use darktable's embedded Lua scripting to apply a style to each image after import, possibly first checking the image information for camera model... However, a more typical method would be to create auto-applied presets in each of the modules that you want to enable/disable. If you hover over the name of a ...


2

Preview and exported images look different because the demosaicking and interpolation algorithms used are different. Even when viewing the exported image at reduced magnification, the down-sampling algorithms are likely different (nearest neighbor vs bicubic vs cubic vs lanczos). Bicubic and cubic will tend to look softer. Consider adding a final sharpening ...


1

I can't answer your question for Darktable specifically , but in general you need software that allows for the creation of keyframes and the interpolation of parameters between those keyframes. The only software that I know that does this for RAW photo files is LRTimelapse (no affiliation). It is used in conjunction with Lightroom, but as it alters the ...


1

After some exploration, it is actually quite straight-forward. The process can be adapted for your own conversion requirements, but I wanted 8-bit TIFF - the reason why is irrelevant. Open up 'Storage Options' in 'lighttable' section of Darktable, set the required settings. For me, TIFF, 8-bit, uncompressed. Set the desired path for file export to disk, and ...


1

No specific recommendations because you don't seem to have anything specific you're trying to learn. When you do, use The Google Machine to locate specific resources. Places to obtain information include: Books Video tutorials (YouTube) Online courses (Lynda, Coursera) Focused Q&A (StackExchange) The Google Machine Wikipedia An approach to consider is ...


1

Use the command line tool lensfun-add-adapter for this, see http://manpages.ubuntu.com/manpages/bionic/man1/lensfun-add-adapter.1.html. You can also do it by hand. Add a file _mounts.xml to a directory where Lensfun searches for your personal XMLs (it’s ~/.local/share/lensfun on Linux, I don’t know the path on Windows) with the following content: <...


1

This question describes what may be a couple different problems: when I change anything (exposure, contrast, etc) temporarily the preview I get from darkroom is what resembles to the jpg photo This may be related to the setting, GUI Options | "don't use embedded preview JPEG but half-size raw", which talberg describes. Make sure it is enabled. It may be ...


1

Yes, you can crop to exact size in Darktable! Using Crop & Rotate tool, which I guess you were already using, change aspect setting from 16:9 to freehand. After you have done that you can change the aspect that you want (or size) by dragging the selection bar, which appears when mouse over the edge of picture. I'm aware that it is a bit fiddly to ...


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