When a digital camera captures an image, image sensors in the camera record the light from millions of sensing area. The camera’s digital circuitry converts the generated analog voltage signal into a digital representation. Many cameras allow these images to be stored in a raw image file. They are similar to digital negatives, as they have the same role as negatives in film photography.
RAW files are not directly usable, but have all the necessary information to create an image. RAW files usually offer higher color depth, higher dynamic range, and preserve most of the information of the image compared with the final image format. The downside of RAW files is that they take up far more storage space. Dynamic range in photography describes the ratio between the maximum and minimum measurable light intensities (white and black, respectively).
As implied by the name, RAW files have not been processed. By taking pictures in raw format the photographer is not committing to the conversion software that is built into the firmware of the camera. Instead, the individual can store the raw files, and make use of computer software to generate better JPEG files, and also benefit from future improvements in image software.
There is a decent range of open source Linux software that processes RAW files. Here’s our verdict. Hopefully, there will be something of interest here for anyone who has a passion for digital photography.
Let’s explore the 15 RAW processing tools at hand. For each title we have compiled its own portal page, a full description with an in-depth analysis of its features, a screenshot of the software in action, together with links to relevant resources.
| RAW Processing Tools | |
|---|---|
| Darktable | Virtual lighttable and darkroom for photographers |
| digiKam | Professional photo management |
| RawTherapee | RAW image processing application |
| LightZone | Professional-level digital darkroom software |
| ART | Fork of RawTherapee |
| ansel | Fork of Darktable |
| RapidRAW | Non-destructive, and GPU-accelerated RAW image editor |
| Filmulator | RAW photo editing application with library management |
| RAWmakase | Develop RAW photographs non-destructively with Vulkan acceleration |
| vkdt | Workflow toolbox for raw stills and video |
| fotocx | Edit, retouch and enhance images while managing large photo collections |
| DNGLab | Camera RAW utility and DNG converter |
| GTKRawGallery | Workflow oriented photo retouching software |
| rawbit | Camera RAW image preprocessor and importer |
| FerrumPix | Organise photo libraries, develop RAW files and edit images with layers |
This article has been updated to reflect the changes outlined in our recent announcement.
 LinuxLinks helps you discover the best free and open source software for Linux. Explore our extensive collection of recommended applications, including alternatives to popular proprietary software.We also publish software reviews, Linux tutorials, hardware reviews, free programming books and articles covering the wider open source community. Browse our Linux resources to discover more. Know a useful free and open source Linux application we haven't covered? Suggest a program for inclusion. Has your software been featured on LinuxLinks? Display one of our Featured on LinuxLinks badges on your website or GitHub README. |
Please read our Comment Policy before commenting.