The 50 1.2L has much better contrast and sharpness wide open than the Nikon. So it should do for the price.   The great thing about the Canon L lenses is that they maintain character, along with their high technical standards. The bokeh on the shots above has a slight curve to it doesn't it? I like it.   I can't wait to use my L glass with Speed Booster on the GH4 to get it closer to the 5D look.   WHERE IS THAT ADAPTER!?!?????