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== General Features ==
<div class="pagetitle">Features</div>


* All the standard features you would expect from a raw developer and much more,
* Open-source, cross-platform.
* A batch processing queue to make tweaking a photo as fast as possible while leaving the CPU grunt work queued up for later,
* Easy camera-like starting point. By default, RawTherapee matches your raw photo to look like the out-of-camera JPEG photo. You can export as-is, or make further tweaks.
* [https://en.wikipedia.org/wiki/Floating_point Floating point] engine - the only raw developer on the market which does all calculations in precise floating point notation so nothing gets rounded off and lost,
* RawTherapee uses [https://en.wikipedia.org/wiki/Streaming_SIMD_Extensions SSE] optimizations for better performance on modern CPUs, and performs calculations in [https://en.wikipedia.org/wiki/Floating_point floating point] precision.
* [https://en.wikipedia.org/wiki/Streaming_SIMD_Extensions SSE] optimizations for better performance on modern CPUs,
* [https://en.wikipedia.org/wiki/Color_management Color management] using the [https://en.wikipedia.org/wiki/LittleCMS LittleCMS] color management system.
* [https://en.wikipedia.org/wiki/Color_management Color management] using the [https://en.wikipedia.org/wiki/LittleCMS LittleCMS] v2 color management system for more precise color handling, providing control over working and output color space,
* Supports DCP and [https://en.wikipedia.org/wiki/ICC_profile ICC] color profiles.
* Support for reading and tone-mapping 16-bit, 24-bit and 32-bit floating-point HDR images in the DNG format,
* Supports most raw formats, as well as floating-point HDR images in the DNG format. Also supports JPEG, TIFF and PNG.
* File browser featuring colored tagging, searching (by text matched to the filename), metadata filtering (by file type, camera model, lens model, photo parameters),
* Support for [[Film Negative|film negatives]] and [[Demosaicing#Monochrome_Cameras|monochrome]] cameras.
* Support for DCP and [https://en.wikipedia.org/wiki/ICC_profile ICC] color profiles, for precise colors or for replicating the “camera look” to match out-of-camera JPEG images,
* Queue your photos for later exporting, freeing up your CPU for working with the preview in a responsive way.
* A history panel to easily see what changes you made and jump back to a specific point,
* [[File_Browser#Rating|Rate]] photos using a 0-5 star system (ratings are read from embedded Exif and XMP), tag them by color, filter by filename and metadata.
* A snapshot panel to work with multiple versions of changes to a photo,
* Scroll the tool panels using your mouse scroll wheel without worrying about accidentally misadjusting any tools, or hold the Shift key while using the mouse scroll wheel to manipulate the adjuster the cursor is hovering over.
* A flexible UI where panels and some individual elements can be adapted or hidden,
* Efficient use of vertical screen space by right-clicking on a tool to expand it while automatically collapsing all other tools.
* Easily pan around photos much larger than your screen thanks to pan rate amplification, eliminating the need for numerous and fidgety mouse movements,
* A Before|After view to compare your latest change to any previous one.
* Scroll the tool panels using your mouse scroll wheel without worrying about accidentally misadjusting any tools, or hold the Shift key while using the mouse scroll wheel to manipulate the adjuster the cursor is hovering over,
* Lossless editing - all adjustments are stored in PP3 sidecar files.
* Maximize screen-space by right-clicking on a tool to keep it visible while automatically collapsing the other ones,
* Dedicated command line support to automate RawTherapee using scripts or call it from other programs.
* A Before|After view to compare your latest change to any previous one,
* Preserve, edit or strip metadata from exported images.
* Support for PP3 processing profiles ([https://en.wikipedia.org/wiki/Sidecar_file sidecar files]), whole and partial,
* Localized in over 15 languages.
* Show various channels in the preview: red, green, blue, luminosity and a focus mask,
* Adaptation of the [https://en.wikipedia.org/wiki/CIECAM02 CIECAM02] color appearance model ratified by the International Commission on Illumination (CIE) to maintain accurate colors and to, given a set of initial viewing condition parameters, convert the image so that it will look the same under the target viewing conditions.
* Show various channels in the histogram: red, green, blue, [https://en.wikipedia.org/wiki/Lab_color_space CIELAB] luminance, chromaticity and raw,
* Profiled lens correction (vignetting, distortion, chromatic aberration) using Lensfun or Adobe Lens Correction Profiles (LCP).
* [https://en.wikipedia.org/wiki/Clipping_(photography) Color clipping] indicators in the preview,
* Dark frame subtraction and flat field correction to eliminate some forms of noise and sensor dust and correct vignetting and lens color casts.
* Export Panel with Fast Export Options,
* Keyboard shortcuts to speed up work,
* Command line support to automate RawTherapee using scripts or call it from other programs,
* Support for most cameras,
* Support new raw formats by simply editing the [[camconst.json]] file in a text editor,
* Audio feedback to inform you when a CPU-intensive task completes e.g. when the queue is done being processed,
* Preserve [https://en.wikipedia.org/wiki/IPTC IPTC] and [https://en.wikipedia.org/wiki/Extensible_Metadata_Platform XMP] of pre-tagged files,
* Adapt RawTherapee to use your system interface's color scheme and widgets or try the provided custom color schemes,
* Localization in almost 30 languages.
 
== Exposure and Color Features ==
 
* The Auto Levels tool tweaks your photos to provide a good starting point,
* Various powerful methods of shadow and highlight recovery and reconstruction,
* Post-crop Vignette Filter,
* Graduated Filter (GND),
* Color picker, which, when activated for a specific curve, lets you pick a point from the preview image and then places a corresponding control point on that curve,
* Two RGB tone curves, each with four methods of control, for unprecedented control of colors and exposure,
* Hue, saturation and value (HSV) and red, green and blue (RGB) curve adjustments,
* Wealth of Lab adjustments for separate control of colors and luminance:
** L* curve for control of lightness,
** a* curve to control the position of a color between red/magenta and green,
** b* curve to control the position of a color between yellow and blue,
** LH curve to control luminance as a function of hue,
** CH curve to control chromaticity as a function of hue,
** HH curve to control hue as a function of hue,
** CC curve to control chromaticity as a function of chromaticity,
** LC curve to control luminance as a function of chromaticity,
** CL curve to control chromaticity as a function of luminance.
* Avoid color shift by using [https://en.wikipedia.org/wiki/Munsell_color_system Munsell correction],
* Vibrance control,
* Preservation of natural skin tones,
* [https://en.wikipedia.org/wiki/Tone_mapping Tone mapping] based on [http://www.cs.huji.ac.il/~danix/epd/ edge-preserving decomposition] for a natural look,
* [https://en.wikipedia.org/wiki/White_balance White balance] - automatic, manual or one of a wide variety of predefined sources,
* Channel Mixer,
* Black-and-White conversion,
* Several methods of color toning,
* Support for [[Demosaicing#Monochrome_Cameras|monochrome]] cameras
* Adaptation of the [https://en.wikipedia.org/wiki/CIECAM02 CIECAM02] color appearance model ratified by the International Commission on Illumination (CIE) to maintain accurate colors and to, given a set of initial viewing condition parameters, convert the image so that it will look the same under the target viewing conditions. Image processing using CIECAM02 is enabled via a number of methods, using curves and sliders. A multitude of tools are adapted to auto-switch to CIECAM02 mode when in use, including [[Tone Mapping]], [[Sharpening]], [[Defringe]], etc.
* Color management.
 
== Detail Features ==
 
* Various sharpening methods:
** [https://en.wikipedia.org/wiki/Unsharp_mask Unsharp mask] featuring a unique and powerful threshold slider to bring out detail while avoiding halos,
** [https://en.wikipedia.org/wiki/Richardson%E2%80%93Lucy_deconvolution RL deconvolution] to undo the blur,
** [https://web.archive.org/web/20110625093654/http://www.rawness.es/sharpening/?lang=en Edges] true sharpening to enhance edges,
** Microcontrast to enhance texture,
** Contrast by Detail Levels using wavelet decomposition into five levels of detail.
* Very powerful wavelet-based noise reduction in the RGB and Lab color spaces,
* Impulse noise reduction to eliminate salt-and-pepper type noise,
* Defringe tool for elimination of purple fringing (or other color).
 
== Transformation Features ==
 
* Perspective correction,
* Adobe Lens Correction Profile support for automatic correction of distortion, vignetting and chromatic aberration,
* Distortion correction,
* Post-demosaic chromatic aberration correction,
* Pre-crop vignetting correction.
 
== Raw Pre-Demosaicing Features ==
 
* Various demosaicing methods to start off by squeezing out the most detail possible from your raw photo:
** AMaZE,
** IGV and LMMSE for use with noise reduction to prevent maze patterns,
** EAHD,
** HPHD,
** VNG4,
** DCB,
** AHD,
** Mono,
** Fast.
* Line noise filter,
* White and black point adjustment,
* Dark frame subtraction to eliminate some forms of noise,
* Flat field correction to easily correct vignetting, lens color cast and sensor dust,
* Manual and automatic chromatic aberration correction.

Latest revision as of 21:21, 9 December 2019

Features
  • Open-source, cross-platform.
  • Easy camera-like starting point. By default, RawTherapee matches your raw photo to look like the out-of-camera JPEG photo. You can export as-is, or make further tweaks.
  • RawTherapee uses SSE optimizations for better performance on modern CPUs, and performs calculations in floating point precision.
  • Color management using the LittleCMS color management system.
  • Supports DCP and ICC color profiles.
  • Supports most raw formats, as well as floating-point HDR images in the DNG format. Also supports JPEG, TIFF and PNG.
  • Support for film negatives and monochrome cameras.
  • Queue your photos for later exporting, freeing up your CPU for working with the preview in a responsive way.
  • Rate photos using a 0-5 star system (ratings are read from embedded Exif and XMP), tag them by color, filter by filename and metadata.
  • Scroll the tool panels using your mouse scroll wheel without worrying about accidentally misadjusting any tools, or hold the Shift key while using the mouse scroll wheel to manipulate the adjuster the cursor is hovering over.
  • Efficient use of vertical screen space by right-clicking on a tool to expand it while automatically collapsing all other tools.
  • A Before|After view to compare your latest change to any previous one.
  • Lossless editing - all adjustments are stored in PP3 sidecar files.
  • Dedicated command line support to automate RawTherapee using scripts or call it from other programs.
  • Preserve, edit or strip metadata from exported images.
  • Localized in over 15 languages.
  • Adaptation of the CIECAM02 color appearance model ratified by the International Commission on Illumination (CIE) to maintain accurate colors and to, given a set of initial viewing condition parameters, convert the image so that it will look the same under the target viewing conditions.
  • Profiled lens correction (vignetting, distortion, chromatic aberration) using Lensfun or Adobe Lens Correction Profiles (LCP).
  • Dark frame subtraction and flat field correction to eliminate some forms of noise and sensor dust and correct vignetting and lens color casts.
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