Darktable manages your digital negatives in a database, lets you view them through a zoomable lighttable and enables you to develop raw images and heighten them.

Features

  • Non-destructive editing throughout the consummate workflow, your original images are never modified.
  • Have advantage of the existent power of raw: All darktable core functions operate on 4x32-scrap floating bespeak pixel buffers, enabling SSE instructions for speedups.
  • GPU accelerated epitome processing: many image opertions are lightning fast thanks to OpenCL support (runtime detection and enabling).
  • Professional color management: darktable is fully colour managed, supporting automatic display contour detection on most systems, including congenital-in ICC profile support for sRGB, Adobe RGB, XYZ and linear RGB color spaces.
  • Cross platform: darktable runs on Linux, Mac Bone X / macports, BSD, Windows and Solaris 11 / GNOME.
  • Filtering and sorting: search your image collections by tags, epitome rating (stars), color labels and many more, utilize flexible database queries on all metadata of your images.
  • Image formats: darktable tin import a variety of standard, raw and high dynamic range image formats (eastward.g. JPEG, CR2, NEF, HDR, PFM, RAF … ).
  • Zero-latency, zoomable user interface: through multi-level software caches darktable provides a fluid experience.
  • Tethered shooting: support for instrumentation of your camera with live view for some camera brands.
  • Speaks your language: darktable currently comes with 21 translations: Albanian, Catalan, Czech, Danish, Dutch, French, High german, Greek, Hebrew, Hungarian, Italian, Japanese, Polish, Portuguese (Brazilian and Portuguese), Russian, Slovak, Slovenian, Spanish, Swedish, Ukrainian.
  • Powerful export organisation supports K+ and Facebook webalbums, flickr upload, disk storage, i:1 copy, email attachments and can generate a simple html-based web gallery. darktable allows you to export to depression dynamic range (JPEG, PNG, TIFF), 16-fleck (PPM, TIFF), or linear high dynamic range (PFM, EXR) images.
  • Never lose your image development settings darktable uses both XMP sidecar files too as its fast database for saving metadata and processing settings. All Exif information is read and written using libexiv2.
  • Automate repetitive tasks: Many aspects of darktable tin can be scripted in Lua.

Modules

Currently darktable contains 61 image functioning modules. Many modules support powerful blending operators offering alloy functionality that works on the incoming image information and the output of the electric current module or be used with drawn masks.

Bones image operations:

  • Contrast, brightness, saturation: Rapidly tune your image using this simple module.
  • Shadows and highlights: Meliorate images by lightening shadows and darkening highlights. Read Ulrich's weblog post on this.
  • Ingather and rotate: This module is used to crop, rotate and correct the perspective of your prototype. It too includes many helpful guidelines that aid you using the tools (e.1000. dominion of thirds or golden ratio).
  • Base bend: darktable comes with general enhanced basecurve presets for several models that are automatically applied to raw images for better colors and contrast.
  • Exposure controls: Tweak the epitome exposure either by using the sliders in the module or dragging the histogram around.
  • Demosaic: You have the choice between several demosaicing methods when editing raw files.
  • Highlight reconstruction: This module tries to reconstruct color information that is usually clipped due to data not being consummate in all channels.
  • White balance: A module offering three means to set the white rest. You tin can set tint and temperature or you define the value of each aqueduct. The module offers predefined white balance settings likewise. Or just selection a neutral region in the prototype to rest for that.
  • Invert: A module inverting colors based on the color of film fabric.

Tone prototype operations:

  • Make full lite: This module allows the local modification of the exposure based on pixel lightness.
  • Levels: This module offers the well-known levels adjustment tools to set black, grayness and white points.
  • Tone bend: This module is a classical tool in digital photography. Y'all tin change the lightness by dragging the line up or down. darktable lets you lot separately control the L, a and b channel. Read in Ulrich's blog mail how to brand use of this feature.
  • Zone organisation: This module changes the lightness of your epitome. It is based on the Ansel Adams system. Information technology allows to modify the lightness of a zone taking into account the effect on the adjacent zones. It divides the lightness in a user-defined number of zones.
  • Local contrast: This module tin be used to heave details in the epitome.
  • Two different tone mapping modules: These modules allow to recreate some contrast for HDR images.

Color image operations:

  • Velvia: The velvia module enhances the saturation in the epitome; it increases saturation on lower saturated pixels more than on high saturated pixels.
  • Aqueduct mixer: This module is a powerful tool to manage channels. As entry, it manipulates scarlet, green and bluish channels. As output, it uses crimson, green, blue or grey or hue, saturation, lightness.
  • Color dissimilarity
  • Colour correction: This module can be used to modify the global saturation or to give a tint. Read Johannes' blog mail service.
  • Monochrome: This module is a quick way to convert an prototype to blackness and white. You can simulate a color filter in order to modify your conversion. The filter can be changed in size and color center.
  • Colour zones: This module allows to selectively modify the colors in your paradigm. It is highly versatile and allows every transformation possible in the LCh colorspace.
  • Color balance: Use lift/gamma/proceeds to alter highlights, midtones and shadows.
  • Vibrance: For a detailed clarification read Henrik's blog mail.
  • Colour wait upward tabular array: Apply styles or film emulations. Y'all can also easily edit the changes done. For more data yous tin can read this blog mail service
  • Input/output/display color profile management
  • A useful feature that displays pixels outside the dynamic range.

Correction modules:

  • Dithering: This helps with banding in smoothen gradients in the last image.
  • Sharpen: This is a standard UnSharp Mask tool for sharpening the details of an image.
  • Equalizer: This versatile module can be used to achieve a multifariousness of furnishings, such equally bloom, denoising, and local contrast enhancement. It works in the wavelet domain, and parameters can be tuned for each frequency band separately.
  • Denoise (non-local means): Denoising with separated color / effulgence smoothing.
  • Defringe: Remove color fringes on high contrast edges.
  • Haze removal: This module allows to remove the low contrast and color tint coming from haze and air pollution.
  • Denoise (bilateral filter): Another denoising module.
  • Liquify: Push prototype parts around, abound them, shrink them. More information tin be found in this blog mail service
  • Perspective correction: A great module to automatically united nations-distort shots with straight lines. See our blog post for an introduction and examples.
  • Lens correction: lens defect correction using lensfun.
  • Spot removal: Spot removal allows you lot to right a zone in your image by using another zone every bit model.
  • Profiled denoise: Past measuring the typical noise of cameras at the different ISO levels darktable is able to remove a lot of it. Read this blog mail for more than information.
  • Raw denoise: Raw denoise allows you to perfom denoising on pre-demosaic data. It is ported from dcraw.
  • Hot pixels: This module allows y'all to visualize and right stuck and hot pixels.
  • Chromatic aberrations: This module automatically detects and corrects chromatic aberrations.

Effects/artistic image postprocessing:

  • Watermark: The watermark module provides a fashion to return a vector-based overlay onto your image. Watermarks are standard SVG documents and tin can be designed using Inkscape. The SVG processor of darktable also substitutes strings within the SVG certificate which gives the opportunity to include paradigm-dependent information in the watermark such equally discontinuity, exposure time and other metadata.
  • Framing: This module allows you lot to add an creative frame around an paradigm.
  • Separate toning: Original split toning method creates a two colour linear toning effect where the shadows and highlights are represented past two different colors. darktable divide toning module is more complex and offers more parameters to tweak the issue.
  • Vignetting: This module is an artistic feature which creates vignetting (modification of the effulgence/saturation at the borders).
  • Soften: This module is an artistic feature that creates the Orton effect also commonly known as softening the prototype. Michael Orton accomplished such event on slide film by using 2 exposures of the aforementioned scene: one well exposed and 1 overexposed; then he used a technique to blend those into a final image where the overexposed prototype was blurred.
  • Grain: This module is an artistic characteristic which simulates the grain of a film.
  • Highpass: This module acts every bit highpass filter.
  • Lowpass: This module acts as lowpass filter. 1 use case is described in Ulrich'due south weblog post.
  • Lowlight vision: Low low-cal module allows to simulate human lowlight vision, thus providing the ability to brand lowlight pictures look closer to reality. It can as well be used to perform a day to night conversion.
  • Bloom: This module heave highlights and softly blooms them over the epitome.
  • Colour mapping: Transfer colors from 1 image to another.
  • Colorize
  • Graduated density: This module aims at simulating a neutral density filter, in guild to correct exposure and color in a progressive mode.

What's New:

New Features And Changes

  • Faster thumbnail generation during import.
  • Some small-scale CSS improvements.

Bug fixes

  • Fix color correction RGB treatment and saturation normalization.
  • Fix smooth scrolling on MacOS.
  • Fix Lr metadata import, this is washed merely if no other XMP present.
  • Ready metadata consign which must exist washed only if the respective
  • setting is activated.
  • Fix combo-box popup scrolling.
  • Properly restore collection hinter messages when needed.
  • Fix stars display in overlay.
  • Set black point setting when dragging the histogram.
  • Set help links for technical grouping module.
  • Properly discriminate cameras with the same prefix in collect module.
  • Set assuming rendering on Windows (for selected presets for example).
  • Fix support of Windows PATH to configuration and libraries when the
  • path proper noun contains not ASCII characters.
  • Properly hide the selected tag tick when a tag is not selected anymore.
  • Fix search on collect module for multiple filename separated with coma.
  • Set up size of clipping handle when preview downwards-sampling is activated.
  • Fix metadata comment reading from exif.
  • Fix a case where the thumbnail could exist out of synchronization with
  • the darkroom edit.
  • Never show filmstrip cursor on selected epitome on other views.
  • Skip possible aught dates on the collect module which could and so
  • crash darktable.
  • Fix waveform histogram rendering on MacOS.
  • Fix some memory leaks.