DxO is heavily testing our m43 lenses and the Leica really looks like a stellar performer:
Panasonic-Leica 25mm f/1.4 review at DxOmark (Click here): “Our measurements of the Panasonic-Leica lens confirm that micro 4/3 lenses are quality optics, with results at least as good as those for entry-level APS-Cs.”
Olympus M.Zuiko Digital 17mm f/2.8 review at DxOmark (Click here).
More lens reviews/news:
Olympus M.Zuiko 45mm f/1.8 Review at Admiringlight (Click here) and Damian (Click here).
Crazy test – Pansonic 20mm f/1.7 vs. Olympus 14-35mm f/2 (Dpreview).
Panasonic Lumix G Vario 45-200mm f/4.0-5.6 MEGA OIS Lens Firmware Update (ePhotozine).
Shop search links for the mentioned lenses:
Panasonic-Leica 25mm at Amazon, Olympus US store, Adorama, B&H, eBay.
Olympus 45mm Amazon, Olympus US store, Adorama, B&H, eBay Panasonic 20mm Amazon, Olympus US store, Adorama, B&H, eBay (out of Stock in ALL US stores).
The superb Olympus 14-35mm f/2.0 on eBay (Click here)