What should a photographer master?

There are many photographers, but none is good.

There is probably a lot to master!

Simple for your reference; 1; Equipment, machine {camera}, lens {choose the lens according to what you want to shoot}.

2; Knowledge and photography is a multidisciplinary art, and a good work contains the energy of the author's life.

In addition to these, we should also have a normal mind, and integrate what we have learned, seen and learned at ordinary times and show them in our works. We must be positive and happy!

I think this is probably what photographers should master! The above is my personal opinion.