What are some good photos?

The New York Institute of Photography has given a very apt definition.

The three criteria for a good photo are:

1, photos should have a distinct theme.

2. Photos must attract people's attention to the subject.

3. Try to be concise.

The so-called distinctive theme is what you want to bring to the audience when you take this photo.

The subject needs to be highlighted through your exposure, composition, reality, contrast, composition, etc., and the inner meaning of this subject is also the theme of your photo.

After that, let the other contents in the non-main picture only play the role of foil and contrast as far as possible. Don't let the background attract the subject's attention.