Compared: Olympus SHG 14-35mm f/2 ED to Panasonic Lumix G 14mm f/2.5 ASPH
In my Guide to ALLVIEW is published comparison of the Olympus Zuiko SHG 14-35mm f/2 to the Panasonic 14mm f/2.5 on the Olympus OM-D E-M5.
The results are not terribly surprising, but even if one has no intention of using the superlative Olympus SHG 14-35, the comparative results show what is possible.