A RAW file is an unprocessed, unfinished photo that comes directly from the camera’s sensor. It’s called "RAW" because it hasn’t been changed or edited yet, so it can’t be printed or used online right away. These files need to be converted into common formats like JPEG or PNG using conversion tools or software. RAW files are large and contain a lot of detail, making them popular among professional photographers and designers. They allow users to adjust things like brightness and colors more easily compared to other file formats. Different camera brands have their own types of RAW files, like Canon's CR2 or Nikon's NEF. There's also a universal type called DNG made by Adobe. In short, RAW files give pros more control and quality in their photos.