RAW is a file format generated by a digital SLR camera, which contains a lot of scene details and color information. Only with Adobe Camera Raw or other professional raw file editing software, can you really manipulate the data, so as to create a perfect photo. Working with raw files can be a nerve-wracking and a difficult problem for digital photographers. Because this kind of file usually takes a long time to process, and the raw files generated by different digital cameras vary widely.