What is the format of photos taken by digital cameras?

Taking the primary color CCD sensor as an example, three colors of RGB light must be obtained in a single photosensitive layer. Therefore, the sensor unit is designed to be arranged in mosaic mode (that is, the common three-color filter mode), and the final result is to collect 50% of the light of green light and 25% of the light of red and blue light. Some readers will ask, since RAW is an uncompressed and non-destructive format, why do photos in RAW format take up less space than photos in TIFF format? This is because the original unit data of RAW only needs to store 8 bits-12 bits, which makes the final size of RAW file much smaller than TIFF. The advantages of choosing RAW format for shooting under high quality requirements are: first, saving storage space (compared with TIFF), and second, speeding up shooting efficiency (storage time, single shooting interval, etc.). ).

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