Why did the photographer remind you to keep the negative?

There are too many benefits of life. For example, the original archive of pictures (when you are infringed, taking out RAW is the best evidence), such as the complete preservation of picture information (you have a lot of space later), and so on. But RAW is not good enough. If you don't convert it into other formats, such as JPG, you can't upload it to the network. Opening it requires some special software. The advantage of JPG is that it can be published quickly and shared quickly.