| Format introduction | A camera raw image file contains minimally processed data from the image sensor of either a digital camera, image scanner, or motion picture film scanner. Raw files are named so because they are not yet processed and therefore are not ready to be printed or edited with a bitmap graphics editor. | Photoshop files have default file extension as .PSD, which stands for "Photoshop Document." A PSD file stores an image with support for most imaging options available in Photoshop. These include layers with masks, transparency, text, alpha channels and spot colors, clipping paths, and duotone settings. |
| Technical details | Raw files contain the information required to produce a viewable image from the camera's sensor data. The structure of raw files often follows a common pattern: a short file header, camera sensor metadata, an image thumbnail and the sensor image data etc, | This is in contrast to many other file formats (e.g., .JPG or .GIF) that restrict content to provide streamlined, predictable functionality. A PSD file has a maximum height and width of 30,000 pixels, and a length limit of 2 Gigabytes. |
| File extension | .3fr, .ari, .arw, .bay, .crw, .cr2, .cap, .dcs, .dcr, .dng, .drf, .eip, .erf, .fff, .iiq, .k25, .kdc | .psd |
| Developed by | Type of format: Image file formats | Adobe Systems |
| Associated programs | iPhoto, Windows Photo Gallery, Windows Live Photo Gallery, FastPictureViewer Professional, Rawstudio, ACDSee Pro, Adobe Photoshop, IrfanView, Paint Shop Pro, ImageMagick. | Adobe Photoshop, Adobe Illustrator, Adobe InDesign |
| Wiki | https://en.wikipedia.org/wiki/Raw_image_format | https://en.wikipedia.org/wiki/Adobe_Photoshop#File_format |