After you finish making changes to an image in Lightroom the photo must be exported at which point it can be printed, shared, or posted online. The edits in Lightroom are a set of instructions for how to process the file, similar to how a recipe is a set of instructions for making food like a cake or casserole. Since the original file was left unchanged I can go back and re-edit the photo any time I want. It’s a technique called nondestructive editing, which stands in stark contrast to how Photoshop operates.įor example, several months ago I sent my father this photo I took of him, which I had subsequently edited in Lightroom. When you apply some type of edit, like a radial filter or adjustment brush, Lightroom is essentially keeping a log of the alterations in a database, while leaving the original image intact. One of the most significant ways in which Lightroom is different from Photoshop is that it does not actually edit photos, nor does it move your images around to different locations on your computer. Instead all the changes you implement are kept in a separate file called the Catalog, which is sort of like a recipe book of instructions for how each photo should be processed.
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