


If you want to have your entire scene in focus but the depth of field is not enough, you can photograph it multiple times, placing the focus on different points. If necessary move the top layer around so that it matches the bottom layer.Reduce the general opacity of the top layer (slider at the top of the layers list).File>Open as layers the second image so that it is added as a second layer.Reinforce image that aren’t compelling enough to stand on their own by blending them with related images in photo-editing software. GIMP and other image-manipulation software enables you to stack two pictures, decrease the visibility of the top photo and ultimately concoct the perfect blend between the two layers. Aligning images by hand and then selecting the areas to cut out can be quite tedious. The general method is shown in this GIMP tutorial.

Focus-stacking with GIMP requires opening all the files as layers and adding transparency masks to the layers to leave behind just the areas that are in focus.
