Now we have to paste the mountain over this second photograph. For simplicity we'll assume that the two photographs have the same size and resolution. Now let's open the second image, the one with the interesting sky. Of course this is possible, and that's what we're going to do.įirst we have to cut out the mountain, the easiest way to do it is to press the keyboard combination Ctrl+X, With a "solid" mountain and a "transparent" sky. If we could cut away the sky, we'd get a layer In our case we have a picture of a mountain and we created a selection that excludes the sky. I guess you can imagine where we're going: If a part of a layer is transparent, you can see what there is in the layer below, if present. Normally they are filled with an image, but they may also be empty. The layers are completely transparent and can be stacked on top of each other. You can see the Layers window more in detail below. It is part of the default interface, but if you closed it for any reason, you can open it again on the menu Windows → Dockableĭialogs → Layers or simply pressing CTRL+L on your keyboard. You can recognize it by the small icon at the top, that looks like this. In the right part of the Gimp interface you can see a window with a small thumbnail of the picture you are working at, that is the Layers window. First let's find out where we need to shift our attention. Now we reached the part with the real protagonists of the tutorial: the Gimp Layers. Photography and the result you want to achieve. The size of the blur must be proportionate to the size of the This way the edge of the selection will be soft, but still sharp. Open Select → Feather and choose 3 Pixels, then confirm with Ok. To create a new layer that will be pasted above the new sky. Now we want to fade the selection of 3 pixels, so that the edge will be softer when we're going to cut the mountain In the example picture below you can see in red the unselected part of the picture. Once you have selected the shape of the mountain, close the selection on the bottom right and left corners of the image. Our specific tutorial on Gimp selections first. In this tutorial we will focus on layers, so if you are not confortable with masks I really suggest you to read In this case we are going to use the freehand selection, to better follow the profile of the mountain. The selections can be found in the Gimp toolbar, they are divided and grouped into different types according to the kind of selection Isolate an area of the image, such as the sky, so you can lighten or darken it.Select a subject to copy and paste, so you can create a copy of the selected part in a new layer.It could be used if we want to change the color of a flower, without affect the rest of the photograph Work only on one part of the photograph, the selected one.It allows us therefore to delimit a portion of the image, we can use it for two different purposes: On the layers in the program, to better understand.Ī selection is a mask, you can imagine it as "a border" that cannot be crossed by the various tools and effects that we are going to use. I suggest you to open Gimp, so you can follow this tutorial How you could use this technique for any other type of editing or modification, but the possibilities are endless. Obviously for the future you'll have to use a bit of imagination to figure out In this tutorial we'll change the sky to a photograph, as you can see above, to make a pratical exercise. Let's try to explain it more in depth, with a practical example and a little more theory. Layers, then, are trasparent, semi-transparent or filled entities, that can be stacked one above the other, that could contain everything can be imported and edited with Gimp.Īnother example is a white background with black text: it is made with one completely white layer below and a second transparent Scissors is called Selection or Mask, while the two different photos stacked one above the other are two different Layers. In photo editing with Gimp the cut done with the Now we can glue the mountain over the photo with the interesting sky to get a mountain with a nice sky. We can take the picture of the mountain and cut away, with scissors, Imagine to have a picture of a very interesting sky and another one with a nice mountain, but a flat and dull sky. In the past, before computers, photo editing could be made cutting out a part of a photograph and pasting it on top of another photo, we'll do the same.Įxcuse me in advance for the repetitions you'll find in the text, but synonyms of the word " layers", in this context, do not exist. I think the best way to understand the Gimp layers is to use an easy to understand example: With these tools, we'll start with the basics. The Layers are a fundamental tool, almost as much as the selections, to make advanced photo editing with Gimp. Gimp tutorial: how to use the layers Layers guide: What are, how to use and how do they differ from masks?
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