Traditional Culture Encyclopedia - Photography major - How to set the time watermark for SLR?

How to set the time watermark for SLR?

No, you can't add date and time watermarks, they are usually added later.

A few SLR cameras can be watermarked with date and time if they are directly connected to a printer for printing.

Now digital negatives, shooting parameters, date and time will be stored in EXIF information synchronously, which is convenient for computer query, unlike film, there is nothing.