Is SLR a symbol of the rich? It is said that people who have no money can't afford SLR.

Not necessarily, it depends on how much you think.

The entry threshold for SLR is not high. But if it continues to develop, new machines, especially lenses, and then all kinds of equipment will burn more money. It really needs a certain economic foundation.

But it can't be said to be a symbol of the rich. Professional photographers will have good equipment, but they don't necessarily have money. It's useless for rich people to take a camera and not produce good works.