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How to Install RawTherapee 5.8 on Ubuntu Linux

RawTherapee 5.8 is now available to download and comes with some new features. It now supports CR3 - a raw image format used by Canon DSLRs and Mirrorless bodies. It also comes with a new awesome feature called Capture Sharpening tool which can automatically recover detail lost to lens blur due to diffraction. Rawtherapee is already very good at sharpening images, this new feature makes it better.

 Download RawTherapee 5.8 AppImage from here ( you don't need .deb file )

 How to Install an Appimage? It's actually easy and simple. Right-click the downloaded AppImage and go to properties. Under the Permissions tab, tick 'Allow executing file as Program'. Now right-click on the file and click RUN. 

 RawTherapee 5.8 is also available for Windows and macOS ( check here )

 New features since 5.7:
  • Automatically recover detail lost to lens blur (diffraction) using the new Capture Sharpening tool, located in the "Raw" tab. It takes place right after demosaicing, and as it works in linear space it is not prone to haloing. Capture Sharpening in combination with Post-Resize Sharpening allows for detailed and crisp results.
  • CR3 support: image data is decoded so you can process your raw files, but metadata is not supported yet. If you have an ICC or DCP input profile for your CR3-producing camera, you will need to point RawTherapee to it manually (Color tab > Color Management > Input Profile > Custom).
  • Improvements of various camera models (new DCP dual-illuminant input profiles, raw crops, white levels, etc.), speedups and optimizations to various tools, better memory management, various bug fixes. See the git log for details.
Source: Rawtherapee

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