LightZone is an open source digital darkroom program, in which we will carry out the necessary steps to extract the best possible images from RAW files from the camera. The program consists of a file browser and an editing module. The LightZone file viewer lets you navigate through the directory tree, presents thumbnails of the photos found in them, and lets you take a closer look at selected images. Here we can also modify the metadata, give the images a rating and collect them in piles. Immediately in the browser you can use a template to invoke an image and get a JPG file with the selected effect in no time, as well as export a collection of files with a slightly larger selection of parameters as JPEG or TIFF. You can also rotate the image here. The Photo Call Module allows you to perform basic tasks related to improving color, light temperature, color mapping, color balance, blurring and sharpening the photo. However, this is done in an unusual way, because it is done by applying layers with subsequent corrections and setting the mask according to brightness or shade. The zone and mask preview can be switched on above the tool panel and this is very helpful in selecting the range to which specific effects will be applied. You can also use the manual selection tools, and you can set the degree of edge fusion for the selected shapes. Of course, the layers can be mixed in different ways, so people used to working with raster graphics will feel at home here. Each layer can be modified or deleted at any time. Finally, we can use the basic tools for retouching. Here you will find the classic removal of red eyes and the removal of point imperfections. For more information about working with LightZone, please visit YouTube on the project channel.