Leica made a few waves with its original Q camera in 2015, and not without merit: the Q was a compact full-frame camera that took advantage of the company's reputation for high-quality lenses. You'll be glad to hear, then, that Leica is back with a full-fledged sequel. The just-unveiled Q2 borrows the same basic formula, including the non-removable 28mm f/1.7 prime lens, but gives you a much higher-resolution 47.3-megapixel sensor and, at last, 4K video capture. It's also billed as the only camera in its class (admittedly a rather small class) with dust and water resistance.