If you don't know how to use them, I strongly suggest you to readourguide to the use of curves for adjusting contrast and brightness. The Basic Group tab: Darktable Gimpīase curve: Curves are a wonderful and powerful tool, but it is essential to well understand how them works. If we set a wrong white balance, we can fix it as many times as we want.The changes are only definitively applied once the program is closed and the image is exported into Gimp, not while you are working inside Darktable. If we apply too much contrast, we can lower it at any time. On darktable the various effects are called modules and do not act 'destructively' on the photograph. On the right you can see a chart, it is called histogram, and it is quite important.If you don't know what it is, we suggest you read this tutorial. The 'white' areas are highlighted in red, the 'black' areas in blue.
Then there's a small little button below the preview, like this, which is used to toggle the over/under exposure indication.I recommend you to activate it when you are adjusting the exposure, but deactivate it from time to time to get a clearer view of what you are doing.On the preview picture you can see red and blue dots, especially on the arm. Below are some other modules, hidden inside the Other modules section, if you want to diginside the program. At the top left we can the logoand the version of the program, at the top right make sure you are inside the Darkroom section.Just below you can see a gear, from which you can access the countless settings of the program.In the middle we see the preview of the photo we are working on, on the right there are two icons in which we will find all the tools(called modules) that we will see in this Darktable tutorial.
Let's have a quick look, then we'll go and see them in detail. In the main window I highlighted the most important things.
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