Recently, I did a lot of studio photography (read: improvised hobbyist studio) using an APS-C camera (Pentax K-30). I don't see any major limitations due to the body.
However, larger formats like full-frame and medium-format cameras appear to be classic studio cameras. What are the reasons to opt for such a larger format for studio photography?
The usually-improved dynamic range seems unimportant using controlled lighting. Nor do I see the thinner depth of field as an advantage. So all I can think of are higher resolution and features that are not inherently bound to those formats e.g. improved controls or leaf-shutter lenses.