Fans of compact prime lenses are sure to be excited by the Fujifilm Fujinon XF 27mm F2.8 ($449.95 list). The slim optic is compatible with Fuji's X camera system, and it's slim enough that smaller bodies like the X-M1 and X-E1 can slide into jacket or cargo pockets when it's attached.
Very small and light; Excellent center sharpness; Classic 40mm-equivalent field of view
Soft edges unless stopped down; No aperture ring.