How to choose a camera for a small studio?

It seems a little out of line to use the residual frame machine in the studio. But if it's a normal pose, it's enough to take pictures on the web page (if it's a large poster, you need to use a full-frame machine mark5D, you know).

Furthermore, if it's a portrait, don't use a camera. Buy a 50mm F 1.4 to match. The imaging is much better.