ePhotozine tested the new Leica 200mm lens and conlcudes:
The Leica DG Elmarit 200mm f/2.8 Power O.I.S is a cracking good lens that is highly functional, with a very useful teleconverter that extends the possibilities. Yes, the price hurts, but the alternatives hurt even more. This is such a pleasure to use and the results are just as satisfying, even with the fairly modest pixel count of the Panasonic Lumix G6. A definite Editor’s Choice.
Also Cory Rice tested the lens:
As would be expected, manual focusing with the Leica was silky smooth and I found the glass exceptionally sharp.
My photographs benefited from Dual I.S. 2, a marriage of in-camera sensor-shift image stabilization technology, and the image stabilization present in Lumix O.I.S lenses. The result is six-and-a-half stops of stabilization (one and a half more than the GH5) and no camera shake in my images despite my shivering hands and a nearly 3-lb lens. I found this feature to be the greatest strength of the G9.
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