The 16-35mm F3.5-4.5 is currently the widest lens in Leica's full-frame SL system, and it's one that the company hopes will cover a lot of use-cases for SL owners. With a loaner lens in hand and plenty of daylight hours to burn, we've been out shooting with the 16-35mm long enough to determine that it's very, very sharp. It's no lightweight of course, and feels every bit as solid as its 990g / 2.2lb suggests. Take a look through our sample images and see what it can do.