CRW is a highly specialized graphic file format developed by the manufacturer of the famous Canon cameras. It is designed to record “raw” images captured by different models of a digital camera Canon. In its characteristics, it is very similar to another proprietary format of this developer - CR2. The main advantage of the CWR format is the preservation of the quality of the digital image as it comes from the camera matrix. The format also contains metadata, namely: conditions for photographing and fixing the image, default image processing settings, camera model.
ARW is an uncompressed file format with a digital image of a sufficiently large size, which Sony has created and successfully uses for raw images of its own digital cameras (Sony Digital Camera Raw Image). That is, files of this format are RAW. To open them, you need to use special graphics programs. Any ARW file has a set of basic information. 1) Information from the manufacturer. This includes information about the camera model, filters, lens, sensitivity, color space, white balance, etc. 2) EXIF information. Details of aperture, exposure time, flash, and more. 3) Thumbnail image. Usually about 12 MPx, color, compression. 4) Full-size image with a large color depth. Typically, 12 bits per pixel, or 4096 brightness levels. A full-sized image can be saved as information about different colors. Red, blue, green. The image is collected, and the result is a color photo. Due to this and due to the large color depth of RAW, this type of file is perfect for processing graphics. Better than jpg. The format provides the ability to save many details. It has more options for adjusting color, restoring details from shadows and reducing noise.