How to choose Canon EF lens?

This is very tangled. It is easy to say wide angle. I suggest you start with 10-22 or Sigma 8- 16 of the deputy factory, and the legend is 12-24. As for telephoto lenses, how far is it? You already have 18-200. Is 200 far enough? It is recommended not to be blind. The frequency of telephoto lens is relatively small. I suggest you use 18-200, 8- 16 before using, 5K, suitable for horses. Use it first, then upgrade it later.