Darktable 1.2.1 for Ubuntu 13.04/12.10/12.04/Linux Mint

Install Darktable 1.1.4 in Ubuntu 13.04 Raring/Ubuntu 12.10 Quantal/Ubuntu 12.04 Precise/Linux Mint 15/14/13 and Darktable 1.0.5 Ubuntu 11.10/11.04/10.04/Mint 12/11/9

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.

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.

White balances, color matrices:

• Fix issues with different camera model names for various Canon cameras
• White balance for Panasonic DMC-GH2
• Updates whitebalance list with the latest version of UFRaw's cvs version
• Whitebalances for Samsung NX5, NX10, NX11

Fixes in this Release:

• new RawSpeed version r537
• Compatible with openEXR 2.0
• Facebook export now allows HQ images (up to 2048px)
• Blend mode "vividlight" should work for NaNs
• Fix compile issues for OpenBSD
• Whitebalance is now relative to daylight, not to camera white balance (this will not change any processing you have done, only the values displayed will differ)
• Now importing folder via key accelerator is supported.
• Only one temperature slider in white balance
• Some fixes to the zoom behaviour in darkroom mode
• New lensfun geometries now supported (with lensfun >= 0.2.7)
• More coherent bauhaus UI for the split toning module
• The color transfer module is now marked as deprecated. Will be superseeded by color mapping in the next major release.
• Fix some possible deadlocks, memory leaks and null pointer dereferences
• Status message in top bar should be updated more frequently now
• Some more elaborate status messages if lens/camera not found in the lens correction module, if export failed
• Option for parallel export threads removed from config, too dangerous
• Option for thumbnail cache now specified in MB
• Updated purge_non_existing_images.sh script
• CLI option -d nan gives per-module output of NaN values
• Some minor renaming, typo fixings...

To install Darktable in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:

Terminal Commands:
sudo add-apt-repository ppa:pmjdebruijn/darktable-release
sudo apt-get update
sudo apt-get install darktable exiv2

Download source for other distributions.
That's it

Source: Darktable