1, Raw is an original image file format, which is the raw information obtained by the sensor of digital camera without processing. After post-processing, photographers can give full play to their artistic talents.

2.Raw files can be previewed by xnview and acdsee, edited and saved by photoshop.

3. For the RAW format picture files shot by the digital camera, you can open them with the camera's own software, or you can open them with DPP software attached to Canon, camraRAW plug-in of photoshop, ACDsee and other picture processor software, and PANSHOP X2X3 of CORL.