darktableĭarktable shares the Lightroom-style photo editor interface that has become more or less standard across every release in the last decade. I’ve got a quick how-to guide at the end of this article, but let’s take a look at the 4 options in a bit more detail. If you want to experiment with all of them, it’s easy to switch between back and forth at any time in your GIMP settings. They’re not really ready for the average home user, though, so I can’t recommend them. If you don’t want to set up a full RAW workflow or you just want to edit the occasional RAW file, DCRaw and nUFRaw are a couple of more basic processors that can open RAW files in GIMP. If GIMP is the open-source movement’s recreation of Photoshop, then these two are the response to Lightroom and the world of RAW photography. The first two options in the list – darktable and RawTherapy – also function as standalone programs, and they both work quite well. Each one is compatible with Windows, macOS, and Linux, so you’ve got a full range of choices no matter where you’re using GIMP. There are four popular RAW processors that are available free: darktable, RawTherapee, nufraw, and DCRaw. To learn about how you can add them into your workflow and to discover some additional RAW processing options for GIMP, read on!īecause GIMP’s developers don’t build in native RAW support, you’ll need to choose an external RAW processor in order to open and edit your RAW files in GIMP. There are a couple of other methods to open RAW files in GIMP, but those two programs are the best free options available. You can apply any non-destructive adjustments you want, and then it passes the processed RAW file directly back into GIMP for additional editing and closes itself. Once you’ve got an appropriate processor installed, opening a RAW file in GIMP will automatically launch it as a plugin. They can both open any RAW files produced by a modern camera, and they integrate seamlessly and instantly with GIMP. The two leading options are darktable and RawTherapee. You’ll need to install a secondary program to handle your RAW files called a RAW processor. GIMP doesn’t know how to open RAW files by default, but there are a few different ways to get around this problem. For example, Nikon cameras use the NEF format. What am I doing wrong? shows how an HSL tool was used to remove color casts from different types of less-than-full-spectrum lighting in different areas of the same scene.Modern cameras use RAW formats to get the best possible image quality, and most camera manufacturers use their own unique proprietary version of a RAW file. This answer to Lots of noise in my hockey pictures. This answer to How to edit photos shot in fluorescent light has some detailed examples of how an HSL tool was used to adjust for the color casts to a wide variety of skin tones shot under less-than-full-spectrum lighting. This answer to What is the effect where some objects are a single bright color but the rest is black and white? shows several extreme examples of using an HSV/HSL/HSB tool to reduce saturation to monochrome for all but one or two colors. I've always thought of it as kind of a "graphic equalizer" (to borrow a term used in audio processing) for color. Rather than shifting all colors by the same amount using color temperature and white balance controls, you can emphasize and/or de-emphasize certain colors without shifting all of the colors. They allow one to shift the hue, increase or decrease saturation, and increase or decrease luminance for each color range independently of the other color bands. These tools are divided into eight or so color bands: red, orange, yellow, green, aqua, blue, purple, and magenta or similar. Other image processing applications call the same type of tool 'HSL (Hue-Saturation-Luminance)' or 'HSB (Hue-Saturation-Brightness)'. HSV stands for 'Hue-Saturation-Value' where Value means luminance or brightness.
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