Traditional Culture Encyclopedia - Photography and portraiture - Why do digital photos have white spots?

Why do digital photos have white spots?

If it is not backlit during the day, it should not show up, at least it will not be so obvious.

If the lens is used for a long time, some dirty things will stick. Just wipe it with lens paper.

It is suggested to find a printing shop with a studio nearby and buy some lens paper to wipe it.

Of course, it's best if someone cleans it for you.