For those that use a flatpak installation on Linux, be aware that the flatpak is labeled as darktable 4.4.2, not 4.6.0, but the installation results in 4.6.0 being installed.

Willy

**********

On 12/21/23 13:19, Pascal Obry wrote:
We're proud to announce the new feature release of darktable, 4.6.0!

The github release is here:
[https://github.com/darktable-org/darktable/releases/tag/release-4.6.0](https://github.com/darktable-org/darktable/releases/tag/release-4.6.0)
.

As always, please don't use the autogenerated tarball provided by
github, but only our tar.xz file. The checksums are:

```
$ sha256sum darktable-4.6.0.tar.xz
724b27e3204d1822de6dc53ea090a6b1ce55f7c32226d34642689775c68aacc2
darktable-4.6.0.tar.xz
$ sha256sum darktable-4.6.0-x86_64.dmg
e4e53cc1ec6a5800029f39728c024882a0357458f5c8d8e0ff16dfe034e701ed
darktable-4.6.0-x86_64.dmg
$ sha256sum darktable-4.6.0-arm64.dmg
c2649a07410d70f5da57f9c3583f24c6a97adb994924af88f132a2232ddf7ab4
darktable-4.6.0-arm64.dmg
$ sha256sum darktable-4.6.0-win64.exe
765fc4d9e67937663253f7cc4d20d4ba829e910ff92626c06dc0846e2ddc77de
darktable-4.6.0.exe
```

When updating from the stable 4.4 series, please bear in
mind that your edits will be preserved during this process, but the new
library and configuration will no longer be usable with 4.4.

You are strongly advised to take a backup first.

#### Important note: to make sure that darktable can keep on supporting
the raw file format for your camera, *please* read [this
post](https://discuss.pixls.us/t/raw-samples-wanted/5420?u=lebedevri)
on how/what raw samples you can contribute to ensure that we have the
*full* raw sample set for your camera under CC0 license!

Since darktable 4.4:

- 1648 commits to darktable+rawspeed
- 553 pull requests handled
- 49 issues closed


_Please note that the darktable documentation is not currently complete
for release 4.6
and contributions are greatly appreciated. Please see the
[project
documentation](https://github.com/darktable-org/dtdocs#contributing)
for more information on how to contribute._

## The Big Ones

The following is a summary of the main features added to darktable
4.6. Please see the user manual for more details of the individual
changes (where available).

- Editing history is now periodically auto-saved (every 10 seconds)
   while editing images in the darkroom view. The auto-save interval can
   be changed (via a preference) or auto-save can be disabled entirely
   (by setting the interval to 0).

- A new processing module _rgb primaries_ has been added. This module
can be used
   for delicate color corrections as well as creative color grading.
   It allows the red, green and blue primary colors to be moved around
   using "hue" and "purity" controls.

   The underlying pixel operation is essentially the same as channel
mixing.

- In addition, the _sigmoid_ module now includes a new _primaries_
section,
   which can be used to gracefully handle difficult lighting situations
   (e.g. LEDs) and tune the overall look of the image. Modifying these
   parameters can provide pleasing sunsets, improved skin tones etc.
   This feature can only be used with sigmoid's per-channel mode and is
   loosely based on ideas from Troy Sobotka's
[AgX](https://github.com/sobotka/AgX-S2O3)
   and related work in the [Blender
community](https://blenderartists.org/t/feedback-development-filmic-baby-step-to-a-v2/1361663
).
   The included "smooth" preset should provide a good starting point
   for further corrections using this feature.

- When working with the liquify and retouch modules, the full uncropped
   image is now always shown, with any crop indicated by displaying an
overlaid
   rectangle. This allows for cropped-out parts of the image to be used
without
   having to first disable the crop module and re-enable it when
finished.

- When panning or zooming in the darkroom view, a low resolution
placeholder
   used to be shown until the image was fully recalculated for the
newly-visible
   region. Now, if any part of the previous view is still visible, that
part will
   be immediately shown in high quality, with only the remainder of the
image
   being temporarily shown in low quality until the pipe has finished.

   This has been achieved as part of a complete reworking of the
darkroom image
   display, which has also removed some annoying jumps when
   replacing the low resolution placeholder with recalculated image
data,
   or when switching between full and cropped view
   (when the crop, retouch or liquify modules are (un)focused).

## Performance Improvements

- OpenCL is now initialized in the background immediately after
launching
   the darktable UI, with progress indicated by a series of toast
messages.
   Previously, this was done before the main UI was launched, which
   could lead to significant delays (sometimes more than a minute)
between
   the user opening darktable and anything appearing on-screen, making
   it appear as though darktable had failed to start. Note that
processing
   will be slower (since darktable will only use the CPU) until OpenCL
is fully
   initialized.

- An OpenCL code path has been implemented for lens correction using
embedded
   correction metadata.

- Image display speed in the map view has been increased by 25%.

- Export speed has been improved for JPEG 2000 and B&W TIFF images.

- The chromatic aberrations module is now approximagely 10% faster when
   run on the CPU.

## Other Changes

- The hot pixels module now supports monochrome images.

- The internal compositional guide widget has been removed from the
retouch
   module as it is not required (you can still display the guide
globally).

- A long-running import session can now be canceled by clicking on the
cross
   in the progress bar on the bottom left of the screen.

- Auto orientation is now supported when importing AVIF/HEIF images
   (requires at least libavif 0.9.2 and/or libheif 1.16.0).

- It is now possible to visualize raster masks in the same way as other
   mask types by clicking the mask visualization icon.

- The dual demosaic mask visualization and performance have been
improved.

- It is now possible to manually define additional vignette correction
via
   the lens correction module.

- The linear ProPhoto RGB color space can now be selected in the LUT 3D
module.

- The following changes have been made to the OpenCL implementation:

   - Benchmarking code has been removed as it no longer produces valid
     results on today's computers.

   - The "pinned memory transfer" option has now been removed from the
     preferences dialog, though it can still be set on a per-device
basis.

   - A new option "use all device memory" has been added to the
preferences
     dialog. Select this option to use all GPU memory, with the
exception
     of a 600MB "headroom" which is left free for use by other
applications.
     A similar option was previously available in earlier versions of
darktable,
     however the headroom is now increased to 600MB to account for
greater
     use of GPU acceleration on modern systems.

   - A new set of options have been added to the preferences dialog, to
allow
     selection of desired OpenCL drivers.

- A built-in "Display P3" color profile has been added for use in
input,
   output, display, working and soft-proofing profiles.

- The highlight reconstruction module can now be used for all non-raw
files.

- The scroll speed in the filmstrip can now be increased by
   holding <kbd>Shift</kbd> while scrolling (filmstrip will move by half
   of the visible images at a time). Holding <kbd>Ctrl</kbd> while
scrolling
   changes the number of images shown (zooms the filmstrip) and thereby
also
   changes the speed achieved when holding <kbd>Shift</kbd>.

- Exported PNG files now embed a CICP (Coding-Independent Code
   Points) encoded color profile in addition to ICC where possible.

- Exported AVIF files now no longer embed a superfluous ICC profile if
the
   color profile can be encoded as CICP.

- Improved scaling and placement of images in the culling view now make
   better use of available screen space.

- When hovering over the sample patches in the global color picker
module
   those areas are displayed on the central image and on the histogram
(if
   the corresponding option is selected). It is no longer necessary
   to have the color-picker activated when doing this. This enhanced
behavior
   is useful, for example, when color grading.

- It is now possible to display a tooltip for a slider or drop-down
   and a separate tooltip for the button to its right (commonly a
   color picker button). This was not possible in previous versions
   of darktable, and was an issue where the button was not directly
   linked to the slider (for example, a button for mask display).

- Holding the <kbd>Ctrl</kbd> key while double clicking a slider or
   drop-down in a processing module now restores any auto-applied
   preset.

- Where multiple drawn shapes are grouped (e.g. in a module's mask)
   the mask manager module now displays a tick mark in front of the
   active combination mode (in the popup menu) when right-clicking one
of
   the consituent shapes. This is usually much easier to read than the
   "Venn diagram" icons in the main module UI.

- Mnemonics have been added to dialog boxes and default actions have
been
   assigned, so that pressing <kbd>Enter</kbd> will trigger the correct
   action and close the dialog.

- More OpenEXR 3.2.0 attributes can now be extracted and displayed in
   the image information module, where present.

- Lens and cameras filters have been added to the collection filters
module.

- AVIF exports have been changed so that there is now no conversion to
YUV
   for lossless. The quantizer selection logic has been updated and
   "lossy" is now the default.

- The content of the main preferences dialog is now (almost) entirely
taken
   from a single definition file (`darktableconfig.xml.in`) making its
layout
   much easier to modify.

- The drop-downs in the preferences dialog now use the same (bauhaus)
   widgets as the drop-downs in the rest of the application, offering
   a more consistent behavior.

- The configuration system now has improved number precision.

- The collections module has been reworked for more consistent sorting.
   All date/time sort orders can now be reversed
   (placing either the oldest or newest first).
   The film roll order can also be reversed when ordered by
   id (which is equivalent to the film roll's first import date).
   The "sort film rolls by" preference has been renamed from "id"
   to "import time" to make this clearer.

   The collection filtering based on rating now uses proper text
   (like "rejected" instead of -1) and the numbers are replaced by
stars.

   The collection module now displays color labels in the same order
   as in the rest of the UI.

- Adding a tag to an image is now considered to be an "edit" and causes
   XMP sidecars to be created/updated (unless XMP creation is disabled).

- New functionality has been added to automatically generate thumbnails
   in the background while the user is inactive in the lighttable view.
   Currently this functionality is only available by running
   `darktable-generate-cache` from the command-line. The new
functionality
   is controlled via a preference setting that defines which thumbnail
   sizes to generate in the background (default "never").

- Two new variables have been introduced to allow the camera crop
factor
   ("EXIF.CROP\_FACTOR") and 35mm-equivalent focal length
   ("EXIF.FOCAL.LENGTH.EQUIV") to be displayed.

- Color harmony guides in the scopes module are now saved and restored
   for every image. It is therefore no longer necessary to reset the
   guides when going back to a previous edit. This information is also
   stored in the XMP file so can be viewed when sharing edits or
   re-importing a collection.

- It is now possible to control chroma subsampling in JPEG exports.

   This allows the user to reduce the color resolution, often resulting
in
   much smaller files that are virtually indistinguishable
   from images with more color information.

   On the other hand, certain images will look better when the chroma
   resolution is maximized. This includes images with small colored
details
   surrounded by a solid background (such as screenshots with colored
text).

- The option to ignore JPEG files when importing is now outdated,
   given that many cameras can also output HEIF images. This option has
   therefore now been changed to ignore all non-raw files.

- The lens correction module now supports embedded metadata from
Olympus
   .ORF files for correction of distortion and chromatic aberration.

   This correction is equivalent to that applied by the camera body to
   in-camera JPEGs. For older bodies that do not apply chromatic
   aberration correction to the JPEGs, the required information is
   also excluded from the embedded metadata so darktable will be unable
   to apply corrections.

   Vignetting correction based on embedded metadata is not supported.
   However, if the camera's "Shading Compensation" option is enabled,
the
   vignetting correction will already have been applied to the data in
the raw
   file.

- The shortcuts system has received several refinements:

   - Deleting or overwriting a default shortcut now moves it to the
     "disabled defaults" category from where it can restored by
     pressing <kbd>Delete</kbd>. It is no longer necessary to uncheck
     "load default shortcuts at startup" (in prefs/misc/interface) to
     keep it disabled.

   - Visual mapping mode now has improved mouse cursors to indicate
whether
     the widget under the cursor can have a shortcut assigned or be
added
     to (or removed from) the quick access panel.

   - The shortcuts tab in the preferences dialog now explains that it
may
     be more convenient to use visual mapping mode.

   - When combining a shortcut with a mouse move (for example
     <kbd>b+scroll</kbd>), separate actions can be triggered by up and
     down moves. For example, <kbd>b+scroll-up</kbd> could cycle
     through the top panel options and <kbd>b+scroll-down</kbd>
     through the bottom panel combinations.

   - A problem with drop-down and slider popups opened via a shortcut,
     whereby they would immediately fill with the shortcut key
     character, was resolved. Those popups are now integrated into the
shortcut
     system, so most non-alphanumeric shortcuts will continue to work.
If a
     dropdown value is changed while the popup is open (for example via
     an automatic calculation in color calibration, a Lua script or a
     MIDI shortcut), the popup is correctly updated/repositioned. After
     a popup is closed it can quickly be reopened to enter another
     value by pressing <kbd>Enter</kbd> (as long as the corresponding
     widget still has focus).

   - On macOS the system shortcuts e.g. for copy and paste will now work
     according to the macOS keyboard defaults, meaning using the
<kbd>command</kbd>
     key instead of the original Linux style <kbd>control</kbd> key.

- The ISO 12464 color assessment mode for the secondary
   preview window is now activated independently from the main window
   (and saved between sessions) with a toggle in the
   <kbd>right-click</kbd> popover of the "display second window" button
   (or using the default <kbd>alt+b</kbd> shortcut).

## Bug Fixes

- Fixed issues with the OpenCL platform checks that were causing
freezes.

- Fixed the size calculation of resizable widgets based on line size of
   their contents.

- Fixed a bug in the collection filters module where the conjunction of
   multiple filters was not handled properly.

- Fixed focus distance detection for Nikon Z mount lens corrections.

- Fixed incorrect cropping of sensor data for sRaw dng files.

- Apply the Lightroom color matrix only when importing a genuine
   Lightroom XMP sidecar file.

- Fixed a crash when increasing the number of recent collections.

- Fixed a crash when clicking+dragging the feather line on the path
   mask.

- Fixed a crash when applying the CMYK soft-proof ICC profile.

- The white borders for ISO 12464 color assessment (toggled with
   <kbd>Ctrl+b</kbd>) are now correctly sized and placed at all
   zoom levels and no longer flash when switching between low and high
   quality preview, both in the center view and secondary preview
   window.

- Fixed an issue downloading to Piwigo when the "on conflict" option
   was set to "don't check".

- Fixed several mouse scroll-wheel issues on macOS when used in
   combination with the <kbd>Shift</kbd> modifier key (color harmonies
   width, module height, geotagging date/time, ...).

- When loading an XMP sidecar file from disk, resolved an issue where
the
   assigned "duplicate number" was already present in the database. This
   has been resolved by instead recalculating the "duplicate number" at
import
   time for all duplicates.

- For large collections on the lighttable and when using small
   thumbnails (more than 15 per line), using the scrollbar or scrolling
   the mouse to move up/down could be slow. The responsiveness of the
   lighttable in this scenario has now been drastically improved and is
   fast and responsive even with ~50k images and 20 thumbnails per line.

- Fixed pixel errors in RAW Chromatic Aberration and LMMSE demosaic
   resulting in decreased noise.

- Fixed the 'avoid colorshift' mode in the RAW Chromatic Aberrations
   module.

- Fixed the snapshot module so that snapshots for removed images
   are no longer accessible – this was previously causing crashes
   when attempting to display a snapshot of a removed image.

- Fixed a potential crash when using an unsupported ICC profile for
   soft-proofing.

- Fixed multiple issues when computing borders in the framing module.
   For a 0% border on the bottom or right-hand side a single pixel
   border was sometimes shown, depending on the export size/zoom level.

   Note that a 0% border doesn't necessarily mean no border at all
   if the chosen aspect ratio doesn't correspond to the aspect ratio
   of the image.

- The internal luminance mask in the tone equalizer has been
   made more resilient to distortion changes made with modules like lens
   correction, crop, etc. After activating a crop, the tone equalizer
   cursor will now show the proper mask luminance values when hovering
   over the image in the darkroom.

- Fixed calculation of required graphics memory for modules performing
   blending operations, possibly avoiding crashes related to OpenCL.

- Added the ability to calculate the crop factor for those cameras
   that do not include this information in their Exif metadata.

- Fixed various bugs related to feathering masks.

- Fixed a DPI scaling issue on macOS causing some GUI elements being
   rendered too small.

## Lua

### API Version

- API version is now 9.2.0

### Bug Fixes

- Fixed `scripts_installer` to handle user names with spaces on
Windows.

### Add action support for Lua


### Other Lua changes

- Allow access to image `change_timestamp`.

## Notes

- When exporting to AVIF, EXR, JPEG XL, or XCF, selecting specific
   metadata (e.g. geo-tag or creator) is not currently possible. For
   AVIF, EXR, JPEG XL, and XCF formats, darktable will not include any
   metadata fields unless the user selects all of the checkboxes in the
   export module's preference options.

- In order to support the correct display of numbers in darktable, the
   minimum supported Gtk version has had to be increased to
   3.24.15. For people who need to build darktable with an older
   version, this can be achieved by removing line 241 of the
   `darktable.css` file on your system. See
   https://github.com/darktable-org/darktable/issues/13166.

- Starting with release 4.4 a new support policy regarding macOS
   versions has been put in place – darktable releases will now only
   support those macOS versions that are also supported by Apple.
   Release 4.6 therefore drops support for macOS versions older than
   12.5.

## Changed Dependencies

### Mandatory

- ???

### Optional

- Bump libavif to 0.9.2

## RawSpeed changes


## Camera support, compared to 4.4

### Base Support

- Canon EOS Kiss F
- Canon EOS Kiss X50
- Canon EOS Kiss X90
- Canon IXY 220F (dng, chdk)
- Canon PowerShot SX220 HS (chdk)
- Fujifilm FinePix SL1000
- Fujifilm X-S20 (compressed)
- ImBack ImB35mm (chdk)
- Leica M10-D (dng)
- Leica M10-P (dng)
- Leica M10-R (dng)
- Leica M11-P (dng)
- Leica Q2 Monochrom (dng)
- Leica SL2 (dng)
- Leica SL2-S (dng)
- Nikon Coolpix A1000 (12bit-uncompressed)
- Nikon Z f (14bit-compressed)
- OM System TG-7
- Panasonic DC-TZ200D (3:2)
- Panasonic DC-TZ202D (3:2)
- Panasonic DC-TZ220 (3:2)
- Panasonic DC-TZ220D (3:2)
- Panasonic DC-ZS200D (3:2)
- Panasonic DC-ZS220 (3:2)
- Panasonic DC-ZS220D (3:2)
- Panasonic DMC-G10 (3:2, 16:9, 1:1)
- Panasonic DMC-GM1S (4:3, 3:2, 16:9, 1:1)
- Pentax K-3 Mark III Monochrome
- Pentax KF
- Samsung EK-GN120
- Samsung G920F (dng)
- Samsung G935F (dng)
- Samsung GX10 (dng)
- Samsung GX20 (dng)
- Sigma fp (dng)
- Sigma fp L (dng)
- Sigma sd Quattro (dng)
- Sigma sd Quattro H (dng)
- Sinar eVolution 75
- Sony ILCE-6700
- Sony ILCE-7CM2
- Sony ILCE-7CR
- Sony ILME-FX3
- Sony ZV-E1

### White Balance Presets

- Leica M (Typ 240)
- Olympus E-P7
- Olympus TG-6
- Sony ILCE-7CM2

### Noise Profiles

- Canon IXY 220F
- Nikon Z f
- Olympus E-P7
- Pentax *ist DS
- Sony ILCE-6700

### Missing Compression Mode Support

- Apple ProRAW DNGs
- CinemaDNG lossless (Blackmagic, DJI, etc.)
- Fujifilm lossy RAFs
- Nikon high efficiency NEFs
- Samsung Expert RAW DNGs
- Sony downsized lossless ARWs ("M" for full-frame, "S" for full-frame
& APS-C)

### Suspended Support

Support for the following cameras is suspended because no samples
are available on raw.pixls.us:

- Creo/Leaf Aptus 22(LF3779)/Hasselblad H1
- Fujifilm FinePix S9600fd
- Fujifilm IS-1
- GoPro FUSION
- Kodak EasyShare Z980
- Leaf Aptus-II 5(LI300059)/Mamiya 645 AFD
- Leaf Credo 60
- Leaf Credo 80
- Minolta DiMAGE 5
- Olympus SP320
- Panasonic DMC-FX150
- Pentax Q10
- Phase One IQ250
- Sinar Hy6/ Sinarback eXact
- ST Micro STV680

## Translations

- Albanian
- Brazilian Portuguese
- Chinese (Simplified)
- Chinese (Traditional)
- Czech
- Dutch
- European Spanish
- Finnish
- French
- German
- Hungarian
- Italian
- Japanese
- Polish
- Russian
- Slovenian
- Ukrainian

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