$4,000 Summilux VS $249 Sony F3.5 Macro

Imaging Resource reviewed the Leica M9 with a 50mm Summilux and compared it to a NEX 7 with the 30mm F3.5 Macro lens. Sharpness was surprisingly close. No doubt when pixel peeking, on DOF, pop and bokeh the Leica is better... but the Sony 30mm acquitted itself well.

http://www.imaging-resource.com/PRODS/M9/M9A.HTM