What is the full English name of shooting RAW?

The full name of RAW format is RAW Image Format, which is an image file format. The electrical signal obtained from the image sensor during shooting is directly stored without other processing after analog-to-digital conversion (A/D conversion). The image file in this format does not average the electrical signals obtained by each photosensitive element with those obtained by surrounding pixels to obtain color information. There is no adjustment in sharpness, contrast, color saturation, white balance, etc. (the most important point is that you don't need to set white balance before each shooting, so you can focus more on photography), which embodies the most original information obtained from the image sensor and can be said to be a real digital negative. The picture size of RAW is relatively large, and the specific calculation method is as follows: size = (number of shooting pixels × number of primary colors) /8.

Its advantages are the highest image quality and moderate image size, and many parameters can be adjusted later without affecting the image quality. The disadvantage is that the RAW file is different from BMP, JPEG and other file types, and there is no header file in the RAW code, which makes many softwares unable to support reading and editing and has poor universality. However, with the development of technology, more and more software supports browsing and editing the RAW format. For example, the newly released RAW plug-in in PHOTOSHOP can edit RAW, and the latest version of ACDSEE also adds support for RAW format. In addition, there are RAW conversion programs, such as Adobe Camera RAW or Phase One Capture One DSLR, which are used to convert the format of RAW.