Get L-Mount lenses at B&H Photo.
This page puts the Leica 50mm f/1.4 Summilux-SL ASPH to use for portraits on the Panasonic S1R using Eye AF focusing mode. A reflector was used for fill lighting. To my eyes, it appears that the 50/1.4 SL has been expressly designed for beautiful portraiture.
Includes images up to full camera resolution. Most images presented in both color and black and white.