These top-of-the-line dSLRs are the cameras that serious amateurs, semi-pros and full professional photographers use. They deliver high resolution, incredible image quality, and the most extensive manual control you can imagine. Most shoot high-quality, high-definition video as well. They're certainly expensive, but if you make your living (or plan to make your living) from photography, there is no substitute for the power that these serious tools offer. It's tough to weight these cameras against each other, since they're all high-performance machines and represent very different price points, but we've given it a try.