Darktable is an open source photography workflow application and RAW developer. A virtual lighttable and darkroom for photographers. It manages your digital negatives in a database, lets you view them through a zoomable lighttable and enables you to develop raw images and enhance them.
The internal architecture of darktable allows users to easily add modules for all sorts of image processing, from the very simple (crop, exposure, spot removal) to the most advanced (simulation of human night vision).
The user interface is built around efficient caching of image metadata and mipmaps, all stored in a database. The main focus lies on user interaction, both in terms of a smooth interface design as well as processing speed. High quality output is also goal.
darktable

darktable

General Info:

  • Darktable runs on GNU/Linux/Gnome.
  • Fully non-destructive editing.
  • All darktable core functions operate on 4x32-bit floating point pixel buffers, enabling SSE instructions for speedups. It offers GPU acceleration via OpenCL (runtime detection and enabling) and has built-in ICC profile support: sRGB, Adobe RGB, XYZ and linear RGB.
  • A collect plugin allows you to execute flexible database queries, search your images by tags, image rating (stars), color labels and many more. Filtering and sorting your collections within the base query or simple tagging by related tags are useful tools in your every-day photo workflow.
  • Import a variety of standard, raw and high dynamic range image formats (e.g. jpg, cr2, hdr, pfm, .. ).
  • darktable has a zero-latency fullscreen, zoomable user interface through multi-level software caches.
  • Tethered shooting.
  • darktable currently comes with 15 translations: albanian, catalan, czech, dutch, finnish, french, gaelic, german, italian, japanese, polish, russian, spanish, swedish and thai.
  • The powerful export system supports picasa webalbum, flickr upload, disk storage, 1:1 copy, email attachments and can generate a simple html-based web gallery. darktable allows you to export to low dynamic range (jpg, png, tiff), 16-bit (ppm, tiff), or linear high dynamic range (pfm, exr) images.
  • darktable uses both xmp sidecar files as well as its fast database for saving metadata and processing settings. All Exif data is read and written using libexiv2.

Changes in this release:

New features:
  • Color look up table module: include preset for helmholtz/kohlrausch monochrome
  • Lens module: re-enable tiling
  • Darkroom: fix some artefacts in the preview image (not the main view!)
  • DNG decoder: support reading one more white balance encoding method
  • Some documentation and tooltips updates
  • Show a dialog window that tells when locking the database/library failed
  • Ask before deleting history stack from lightable.
  • preferences: make features that are not available (greyed out) more obvious

Bugfixes:
  • Main view no longer grabs focus when mouse enters it. Prevents accidental catastrophic image rating loss.
  • Don't write all XMP when detaching tag
  • Don't show db lock popup when dbus is used to start darktable
  • Actually delete duplicate's XMP when deleting duplicated image
  • Ignore UTF-8 BOM in GPX files
  • Fix import of LR custom tone-curve
  • Overwrite Xmp rating from raw when exporting
  • Some memory leak fixes
  • Lua: sync XMPs after some tag manipulations
  • Explicitly link against math library
  • Always cleanup undo list before entering darkroom view. Fixes crash when using undo after re-entering darkroom
  • Darkroom: properly delete module instances. Fixes rare crashes after deleting second instance of module.
  • Levels and tonecurve modules now also use 256 bins.
  • Rawoverexposed module: fix visualization when a camera custom white balance preset is used

How To Install?

>> Darktable 2.2.2 version available for Ubuntu 16.10 Yakkety/16.04 Xenial/Linux Mint 18 and previous versions for Ubuntu 14.04 Trusty/12.04 Precise/Linux Mint 17/13
To install Darktable in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:
Download source for other distributions. That's it
Source: Darktable
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