Ask the master photographer-rainy days;

The first block is the result of over-adjustment in the later period, which leads to poor gray transition. Another possibility is to use economical storage mode, that is, large compression ratio storage, which will also cause unnatural gray transition. The way to overcome this problem is to store in RAW format, do post-processing by yourself, and store with low compression ratio and high quality. ? For example, after a movie shot at dusk is stored at a high compression ratio (20% by mass), a circle appears in the sky. At this time, the picture file is only 55K.