The Panasonic Lumix G Leica DG Summilux 15mm f/1.7 ASPH. ($599.99) is a wide-angle lens with an all-metal build, a wide f/1.7 maximum aperture, and an aperture control ring. It's compatible with Micro Four Thirds cameras from Panasonic and Olympus, and is capable of capturing really terrific images...
Quite sharp; Wide aperture; Manual aperture ring; All-metal build; Includes lens hood
Some edge softness unless stopped down; Some distortion; Pricey