Raw photo意思

"Raw photo" or "raw image" is a term used in photography to describe an image file that has not been processed or altered from its original format as captured by the camera's sensor. Raw files contain all the data recorded by the sensor, including exposure, color, and other settings, without any in-camera processing or compression.

Raw photos are different from JPEG or TIFF files, which are processed and compressed by the camera before being saved. This means that raw files retain more detail, dynamic range, and color information, which can be useful for photographers who want to have more control over the final image during post-processing.

Raw files are typically saved in a proprietary format specific to the camera manufacturer, such as Canon's CR2, Nikon's NEF, or Sony's ARW. These files can be edited using specialized software, such as Adobe Photoshop Lightroom or Adobe Camera Raw, to adjust exposure, white balance, color, and other settings without losing image quality.