Is there any loss of image quality after shooting? Is JPG serious?

1. This question can't be answered, and the conclusions are different with different reference standards. Different picture uses have different picture quality standards;

2. There are three formats of digital photography, one is the general original TIFF format, the other is the specific original RAW or DNG format (RAW or DNG can be subdivided into three types: no compression, lossless compression and lossy compression), and the other is the general film JPG format (JPG can be subdivided according to the fineness). Different cameras have different formats;

3. The original film (TIFF or RAW) contains the most abundant image data, among which TIFF format is usually used for high-precision printing, RAW format is usually used as the basis for post-editing (RAW format is not a universal format, and special software is needed to read RAW format), while JPG format is a universal image format, for example, for displaying and viewing on a monitor or ordinary printing. Color bit depth and dynamic range in FIFF and RAW formats. The data capacity is higher than or exceeds JPG format. For example, the RAW format is usually 14 bits deep, while the JPG format is at most 8 bits deep. If you convert RAW into JPG, the picture is only 8bits deep, and the information contained in the picture is relatively reduced. When RAW is converted to JPG, it is irreversible. In the overall sense of the picture, the quality of JPG movies is lost;

4. Although the 4.RAW format contains richer image data (image information), these more image information are hidden and invisible to human eyes. Moreover, the RAW format is not a general image format and cannot be widely used, so its significance is only that there is more room for selection and modification when editing images, and the hidden image information of RAW can be displayed when editing images. Editing RAW and converting the image format into commonly used JPG will abandon the image information that the editor thinks is unnecessary. As far as the use of pictures is concerned, the quality of JPG movies is not lost.