Canon's 7d lens with 15-85 or 6D lens with17-85 is mainly used for product close-ups (Taobao men's shoes) or other matching that need the same effect as big stores.

Generally, we buy new lenses instead of old ones. They are a little old in the 1970s, so 15-85 is better, with a wide-angle equivalent of 24 and a telephoto equivalent of 136, which is quite practical. The performance advantage of 7D is that it has 19 focal points, all of which are intersections (for the horizontal and vertical directions in the figure). 60D has full cross focus at 9: 00, and there is no double cross change. The fuselage is engineering plastic, but for your use, don't care too much about the anti-strike ability of the equipment. Both bodies are relatively new, so it mainly depends on how many copies you plan to download. As for whether it is a big store that can shoot, the equipment is just one of them. It is mainly a long-term effort to redistribute the photographer's own technical mastery and personal artistic accomplishment of commodity photography, rather than finding some "cheats".