What's the matter with the photo font reversed?

1, this often happens in the film period, because after taking photos, the film should be developed first, and then the negative image on the negative film should be projected onto the image paper with a magnifying glass for amplification and printing. If you don't pay attention to the reverse side of the negative, the developed photo text will be reversed.

2. During the period of digital photography, the number of reflections will be greatly reduced. If the characters are photographed directly, they are all positive, but if they are processed by later software, they will sometimes be mirrored like film, and the characters will become negative.