Hello everyone!
I recently purchased a camera that can save RAW images, and I am pleasantly surprised by the amount of OpenSource and powerfull software for RAW processing.
Darktable is one of my favorites. You can edit by light and color zones, create masks, use multiple instances on each filter, profiled noise reduction for some cameras, support LensFun, among many other things. It also has a great equalizer with good presets. I love it. Some people say it is the OpenSource Adobe Lightroom. Only available for Linux and Mac.
http://www.darktable.orgRawTherapee, I love this program too. Perhaps less options than Darktable for editing, but it seems more powerful and a little more professional in its features. It has a powerful noise reduction for high ISO, which I use a lot. Also the "Defringe" filter to reduce this kind of chromatic aberrations.
http://rawtherapee.comUFRaw, I think it is one of the best known in the OpenSource world for being one of the first. It has a plugin for GIMP. It is powerful and easy to use. Sometimes I use it to reduce some chromatic aberrations.
http://ufraw.sourceforge.netLightZone, I just discovered this program. It seems a very good program, has a very good user interface, but something it is heavy (I think it uses java). It has a lot of filters. Also some predefined styles that you can find out there.
http://lightzoneproject.orgAdobe DNG converter, It is not open source, but free. If your RAW format is not compatible with some of the above programs, you can convert your RAW to DNG with Adobe DNG converter. Also works with Wine.
Other OpenSource programs related to HDR, RAW and photos that I have not tried much:
Photivo :
http://photivo.orgLuminance HDR :
http://qtpfsgui.sourceforge.netRaw Studio :
http://rawstudio.orgDelaboratory :
https://code.google.com/p/delaboratoryHDRMerge, It seems that this is something interesting:
https://github.com/jcelaya/hdrmergehttp://rawtherapee.com/forum/viewtopic.php?f=1&t=5426DCRaw, used by many of the above programs.
Kipi -plugins , Hugin tools , lensfun , Digikam , Krita (Surely you can find them in the repository of your Linux ditribution).
So, lots of fun guaranteed
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