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.
DCR is a graphic format for bitmap images. DCR, or Kodak RAW Image File, is a Kodak format RAW file. Files of this type are usually used in digital SLR cameras in order to take photographs and at the same time not to compress or adjust the color. The format was developed by Kodak, whose specialization is in the manufacture of photographic equipment. Kodak RAW Image File, like other graphic RAW formats, is primarily designed to store digital images in an uncompressed and unprocessed form. In this case, they can be edited more accurately. They are stored on a computer so that later the photos can be edited more accurately compared to JPEG images. After processing on the computer, the DCR file can be converted to any popular format. Say in JPEG. DCR images are capable of storing data without compression. They do not include default colors and color correction. And this is inherent in a JPEG image. The main advantage in using this RAW format is that you can have better image quality if digital post-processing is performed. To make the details more visible, and the shapes more defined, you need to reduce noise and better balance the white color.