<a href="http://www.rawtherapee.com/?mitem=3&artid=47">Download RT v3.0 alpha 1:

http://www.rawtherapee.com

Rawtherapee is a <a class="zem_slink freebase/en/raw_image_format" title="Raw image format" rel="wikipedia" href="http://en.wikipedia.org/wiki/Raw_image_format">RAW image processing software. It gives full control over many parameters to enhance the raw picture before finally exporting it to some common <a class="zem_slink freebase/en/image_processing" title="Image processing" rel="wikipedia" href="http://en.wikipedia.org/wiki/Image_processing">image format.

You can also install the version &#8221;3.0&#8221; from the fedora repo using the command:

sudo yum install rawtherapee

Main features :

• Selectable high performance demosaicing algorithms (EAHD and HPHD and VNG-4).
  Compare them on this comparison page.
• Using <a class="zem_slink freebase/en/dcraw" title="Dcraw" rel="homepage" href="http://www.cybercom.net/%7Edcoffin/dcraw/">DCRaw 8.82/1.398 for decoding RAW images
• Image post processing in 16 bit / channel mode
  o Exposure control in <a class="zem_slink freebase/en/rgb_color_model" title="RGB color model" rel="wikipedia" href="http://en.wikipedia.org/wiki/RGB_color_model">RGB space

• Auto exposure with adjustable clipping point / Exposure compensation / Shadow and highight compression / Contrast adjustment, curve editor
  o White balance adjustment in RGB space
• With in-camera, automatic and spot white balance options / Temperature/Green tint fine tuning
  o Highlight Recovery
  o Shadows/Highlights control in RGB space
  o Basic Luminance curve tool to modify the luminance channel in CIELab <a class="zem_slink freebase/en/color_space" title="Color space" rel="wikipedia" href="http://en.wikipedia.org/wiki/Color_space">color space
• Brightness / Contrast adjustment, curve editor
  o USM sharpening applied on the CIELab luminance channel
• Classical USM parameters (Radius, Amount, Threshold) / Option to avoid noise amplification / Sharpening halo control
  o Optional RL Deconvolution based sharpening for even better sharpening results
  o Color shift control in CIELab color space
• Allows color shift by shifting the CIELab &#8221;a&#8221; and &#8221;b&#8221; channels
  o Color booster applied on the CIELab &#8221;a&#8221; and &#8221;b&#8221; channels
• Amplifies color channels &#8221;a&#8221; and &#8221;b&#8221; together or separately / Avoids color overamplification in high chrominance areas / Option to avoid clipping caused by too high color boosting
  o Luminance denoising algorithm applied on the CIELab luminance channel
• Edge sensitive method to preserve as much details as possible
  o Color denoising tool applied on the CIELab &#8221;a&#8221; and &#8221;b&#8221; channels
• Classical gaussian blur or edge sensitive bluring of the color channels
  o Fast switching between different postprocessing profiles
  o Image flipping horizontally or vertically, rotation by 90 degrees clockwise or counter clockwise
  o Arbitrary image rotation (straightening tool)
• with fill function or automatic crop
  o Simple lens distortion correction
  o Crop tool
  o <a class="zem_slink freebase/en/chromatic_aberration" title="Chromatic aberration" rel="wikipedia" href="http://en.wikipedia.org/wiki/Chromatic_aberration">Chromatic Aberration correction tool
  o Channel Mixer for Red, Green and Blue channels
  o C/A Correction
  o Vignetting Correction

• ICC based color management
• Change History with bookmarks to support before/after checking
• Output options:
  o Supported file <a class="zem_slink freebase/en/image_file_formats" title="Image file formats" rel="wikipedia" href="http://en.wikipedia.org/wiki/Image_file_formats">formats:

• <a class="zem_slink freebase/en/jpeg" title="JPEG" rel="wikipedia" href="http://en.wikipedia.org/wiki/JPEG">JPEG (8 bit), <a class="zem_slink freebase/en/png" title="Portable Network Graphics" rel="wikipedia" href="http://en.wikipedia.org/wiki/Portable_Network_Graphics">PNG (8 or 16 bit), <a class="zem_slink freebase/en/tagged_image_file_format" title="Tagged Image File Format" rel="wikipedia" href="http://en.wikipedia.org/wiki/Tagged_Image_File_Format">TIFF (8 or 16 bit)
  o Image ouput size could be set
  o EXIF data is preserved in JPEG output (except crw files)
  o Output directory and automatic file naming highly customizable

• File browsing with thumbnails
• Localization supported (utf8 language file):
  already included languages are: czech, deutsch, english, espanol, italian, latvian, magyar, nederlands, polish, russian, slovak, swedish

Screenshot&#8217;s for you:

<a href="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/05/sh1.jpg"><img class="size-medium wp-image-1621" title="Rawtherapee" src="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/08/sh1-300x178.jpg" alt="Rawtherapee" width="300" height="178" />

<a href="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/05/sh2.jpg"><img class="size-medium wp-image-1622" title="Rawtherapee" src="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/08/sh2-300x187.jpg" alt="Rawtherapee" width="300" height="187" />

<a href="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/05/Screenshot-rt.jpg"><img class="size-medium wp-image-1623" title="Rawtherapee" src="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/08/Screenshot-rt-213x300.jpg" alt="Rawtherapee" width="213" height="300" /><h6 class="zemanta-related-title">Related articles by Zemanta <ul class="zemanta-article-ul"> <li class="zemanta-article-ul-li"><a href="http://helpdeskgeek.com/linux-tips/convert-images-between-formats-via-the-command-line-in-ubuntu/">Convert Images Between Formats via the Command Line in Ubuntu (helpdeskgeek.com) <li class="zemanta-article-ul-li"><a href="http://www.noupe.com/design/everything-you-need-to-know-about-image-compression.html">Everything You Need to Know About Image Compression (noupe.com) <li class="zemanta-article-ul-li"><a href="http://ceoworld.biz/ceo/2010/04/13/top-best-screen-capture-software-for-you">Top Best Screen Capture Software for you (ceoworld.biz) <div class="zemanta-pixie"><a class="zemanta-pixie-a" title="Reblog this post [with Zemanta]" href="http://reblog.zemanta.com/zemified/b532aaf8-9375-47d3-882c-12e83437c8ec/"><img class="zemanta-pixie-img" src="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/08/reblog_b53.png" alt="Reblog this post [with Zemanta]" /><span class="zem-script more-related more-info pretty-attribution paragraph-reblog">