After reading some glowing reviews of the Sony RX10, I bought one in as-new condition, open-box sale. It is a lovely camera in many ways, but when I tested it against my Canon 6D and Olympus EM-5, I got some disappointing results. To make things as fair as possible, both the 6D and the EM-5 sported zoom lenses, since that's what comes on the Sony. ISO was 200, the lenses were set to 50mm equivalent, with an aperture of f8 on the Canon and apertures to give equivalent depth of field on the other cameras. The Canon had a garden-variety 28-105mm lens, although mine is a very sharp copy, and the EM-5 was wearing the Panasonic 14-140 II. All shots were of a brick wall with signs, my favorite test subject, in bright sunlight so shutter speeds were high. Examining the frames at 100%, the EM-5 was not quite as good as the Canon, but still held up surprisingly well in comparison. The Sony shots, however, were quite noticeably less sharp and contrasty than the EM-5 shots. Conclusion: It's going back to the seller. Maybe it's just a bad copy, but I don't think I'll get another one.