RE: [darktable-user] darktable 4.2.0 released

Marc Cabuy Wed, 21 Dec 2022 06:18:19 -0800

Hello Developers, Testers and Documenters,

THANK YOU

for the continuous improvement cycles you’re bringing to my favourite photo editor.

I am looking forward to start using it and to discover what it brings, especially:

- the new Sigmoid display transform module

- the new algorithms for highlight reconstruction

- the enhanced second darkroom image window (I use it often to validate the changes on a larger display)

- the lens correction module using the lens correction profiles in the raw file (I hope it works for Fujifilm X-Trans raw files).

Regards and happy holidays,

Marc.

And also please note that I am an enthousiastic user of the lighttable after all the fine capabilities and flexibility brought by the updates of the past years in the UI.

Van: Pascal Obry
Verzonden: woensdag 21 december 2022 13:08
Aan: darktable-user; darktable-dev
Onderwerp: [darktable-user] darktable 4.2.0 released

We're proud to announce the new feature release of darktable, 4.2.0!

The github release is here:

[https://github.com/darktable-org/darktable/releases/tag/release-4.2.0](https://github.com/darktable-org/darktable/releases/tag/release-4.2.0)

As always, please don't use the autogenerated tarball provided by

github, but only our tar.xz file. The checksums are:

```

$ sha256sum darktable-4.2.0.tar.xz

18b0917fdfe9b09f66c279a681cc3bd52894a566852bbf04b2e179ecfdb11af9

darktable-4.2.0.tar.xz

$ sha256sum darktable-4.2.0_x86_64.dmg

89308cb7222ec0d0b539771dd90284e98b35bae4b53c8f3aa1b2feb861536b82

darktable-4.2.0_x86_64.dmg

$ sha256sum darktable-4.2.0_arm64.dmg

7cbc03cc0e9a4a1769e4321815ed99384de8c063990eb5d746ffbd7599e32193

darktable-4.2.0_arm64.dmg

$ sha256sum darktable-4.2.0-win64.exe

748e617d36f810890fcc7829fdf0e9999da2906b20293a2ac919808f80709e27

darktable-4.2.0-win64.exe

```

When updating from the stable 4.0.x 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 4.0.x.

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 4.0:

- Almost 1411 commits to darktable+rawspeed

- 409 pull requests handled

- 60 issues closed

## The Big Ones

The following is a summary of the main features added to darktable

4.2. Most of these features are described more fully in the user

manual.

- New Sigmoid display transform module, which can be used in place of

the filmic and base curve modules.

- Two new algorithms are provided in the highlight reconstruction

module:

"inpaint opposed" and "segmentation based". The "inpaint opposed"

algorithm has proved to be very stable and provides good results in

many images, so it replaces "clip highlights" as the new default

algorithm.

- The pixelpipe used for image display in the darkroom view has been

reworked

so that it can be used elsewhere (darkroom view, second display

window,

duplicate manager, style preview, snapshot routine). This has allowed

for code de-duplication as well as enhancement of many of these

features

(see below).

- The second darkroom image window has now been enhanced to support

both

the focus peaking and ISO-12646 color assessment modes.

- The snapshot module has been entirely reworked so that, instead of

using a

fixed screen capture it now uses a dynamically generated view using

the new

pixelpipe functionality. This means that it can now be zoomed and

panned

with keyboard/mouse.

- The duplicate manager previously used a different pipe routine to

calculate

its previews (i.e. when long-pressing on a duplicate image thumbnail)

which

often meant that the displayed duplicates differed from the main

darkroom

view in subtle ways. Use of the new pipe routine now means that these

previews

will be identical to those produced during darkroom editing.

- It is now possible to preview the effect of a user-generated style on

an image before applying it. Simply hover over the style name in

either

the lighttable styles module or the darkroom quick-access menu and a

new tooltip will appear, showing the image with the style applied

along

with details of the modules that are included.

- Some cameras record lens correction information within the image

EXIF metadata. The lens correction module has been enhanced so that

it can extract this data and use it to correct lens distortions.

- darktable is now able to read and write JPEG XL images

- Processing and utility modules have been altered so that if a module

not entirely visible when expanded, it will be automatically scrolled

until the entire UI is visible on screen.

For users who currently use the "scroll to the top when expanded"

preference

setting to achieve this effect, this change may provide a better

alternative.

As part of this change, a new animation effect has been added when

expanding/collapsing modules. The speed of the expand/collapse

animation

can be controlled via a preference setting

(`preferences > miscellaneous > duration of ui transitions`).

Set this to zero to disable the animation.

- The pixelpipe caching functionality has been completely overhauled.

cachelines are used with an improved hit-rate while controlling

the total amount of memory used, leading to a significantly faster

interface.

- The slideshow has been rewritten for a better user experience.

A small preview is displayed while the full image is computed

to provide feedback to the user that something is being done in

the background.

- A new drop-down menu has been added to the top filter bar to allow

filters to be easily added and removed. Some range widgets have been

removed from this list as they are not easily readable on the top

bar.

- The UI of the range rating filter widget has been reworked for better

readability. This revised widget is designed to be easier to use

and more efficient.

## Other Changes

- Added support for manipulating shapes without using the mouse scroll-

wheel

(for tablet users). The mask manager has been enhanced with a new

collapsible

section containing controls for changing shapes properties.

It is also possible to change a property that is shared by a group of

shapes.

The circle and ellipse shapes have also been enhanced with new on-

canvas

controls to change the mask size and feathering.

- WebP read support has been added.

- Embedded ICC profiles are now supported in exported WebP files.

- Double-clicking on a notebook tab now resets all widgets within that

tab.

- Regional date/time format is now supported in thumbnail tooltips.

- Lua commands are displayed in a widget's "action" tooltip.

- The SSE code path has been removed from the white balance and

output color profile modules as compiler defaults now provide a

similar speed.

- Added support for JFIF (JPEG File Interchange Format) file extension

(which is an extension of the JPEG standard).

- The preference to auto-apply a sharpening has been removed. For users

who still require this functionality, it can be easily achieved with

user-generated auto-applied preset.

- Added support for updating existing pictures in Piwigo export.

- All white balance presets have been migrated to an external JSON

file.

This should not affect the module's operation.

- The preferences to set the layout of the "color balance module" and

the

colors of the "white balance" module have been removed from the

global

preferences dialog, as these controls are already available directly

within

the respective modules.

- Improved profile support for AVIF & EXR format. Also relax AVIF

reader support by not requiring full compliance.

- The current collection image count is now shown in the top bar beside

the image filters meaning that it is available even when the top

hinter

area is hidden.

- Attempt to obtain the color-space for PNG files from the cICP chunk.

This was

added in a recent revision of the PNG spec, so we take advantage of

it, if present.

- Reading of 16-bit half float for the TIFF format is now undertaken

using

the Imath library.

- The format and storage parameters in the export module can now be

mapped

to shortcuts.

- Introduced balanced "OpenCL vs CPU" tiling. This makes it possible to

use CPU tiling if there is not enough memory on the OpenCL card

(which would require a lot of tiles to be handled on the card). In

the

end, the large number of tiles plus the overlapping area would make

the use of the OpenCL code path slower (or much slower) than

handling the image without tiling on the CPU.

- In preview mode (when pressing <kbd>Ctrl+w</kbd>) the image

information overlay display block is no longer shown by

default. Moving the cursor within the top half of the preview image

will cause the overlay to appear, and it will then disappear again

after a brief period.

- Light patterns are set for Behringer b-control midi rotors

(BCR2000/BCF2000)

- Fixed reading of EXIF metadata when importing EXR files (if desired,

existing files must be re-imported, as it is not possible to refresh

metadata).

- Added support for scrolling through a module's presets using

shortcuts.

- Panels now use "natural sizes" by default, meaning that their initial

size adjusts according to screen resolution.

- The geo-tagging module now better supports narrow side-panels by

wrapping rather than ellipsizing text.

- More actions have been added to the main help screen (displayed by

pressing the <kbd>h</kbd> key).

- The lensfun library is now a mandatory dependency. This ensures

that all darktable builds correctly include the lens correction

module.

This also means that an edit made using this module won't be

inadvertently

lost due to missing build dependencies.

- It is now possible to assign shortcuts to the "currently focused"

processing module. This allows a common set of shortcuts to be

created and reused in multiple modules simply by focusing that

module. For example a single key shortcut applied to the "first

slider" will affect the "exposure" slider when the exposure module

is focused, and the "rotation" slider when the "rotate and

perspective" module is focused. Similar functionality can be used to

affect the "nth" slider, combobox, button or tab as well as the

focused module itself.

- Right-clicking on a module header in the quick access panel now

allows

more widgets from the same module to be quickly added. The tooltip

and

icon show whether those widgets are currently hidden in the full

module.

## Bug Fixes

- Properly use the display color profile in the slideshow view. This

was

missing, meaning that images were ignoring the color profile and were

displayed (very) differently than in the lighttable or darkroom

views.

- Properly honor a module's on/off status in a style. This means that

styles

can now be used in the export module to disable a module otherwise

enabled in the history stack.

- Fix bauhaus popup size and position.

- Fix the name of the "iop order" on reset.

- Do not display deprecated module actions in the shortcuts section of

the global preferences dialog.

- Fix the positioning of some bauhaus widgets on Wayland.

- Fix performance issue when importing large folders where XMPs contain

a lot of metadata.

- Fix some missing GUI updates in the liquify module. In some cases,

changing the strength of a node in a curve or line was not properly

updating the displacement values.

- Fix bad interaction between the color assessment mode and the side

panels.

- Fix infinity focus display in the image information module.

- Fix translation of retouch module toast messages.

- When importing images, retain the currently selected folder/filmroll

mode

in the collections module if one of these modes is currently active.

If another collection mode was active the import switches back

to filmroll mode (as before).

- Fix Lab conversion in TIFF import.

- Fix highlights visualization in all recovery modes.

- Fix X-Trans highlight reconstruction visual indicator.

- Fix undo/redo after a style is applied via a shortcut.

- Do not rebuild the whole tree when deleting or editing a

preset in preferences. This provides better UI stability.

- Fix broken refresh of the mask manager when changing images.

- Fix mask selection after continuous mask creation.

- Fix name and tooltip in demosaic preferences so it is correct for all

types of sensor.

- Remove the automatic check for OpenCL headroom - it was causing

RE: [darktable-user] darktable 4.2.0 released

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