ARW (Sony Alpha Raw) is a raw, uncompressed image file format mostly used by Sony Alpha cameras. In this format, the data is saved using TIFF specifications. To open an ARW file, it, first of all, needs to be edited by a program such as Adobe Photoshop Elements.
JPG, sometimes called JPEG, is a standard image format developed by the Joint Photographic Experts Group. JPG uses a high degree of lossy compression to give it a small file size while sacrificing the overall image quality. It can achieve up to an impressive 10:1 compression algorithm. Today, it’s the most widely used image format, thanks to its seamless compatibility with the World Wide Web and most image viewing and editing apps.
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