EXCERPT page containing first few paragraphs. 2019-02-17 10:55:58
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Sony A7R II firmware 3.2 (?, version prior to 4.00), 70-200/2.8 GM OSS firmware 02
I took the Sony 70-200mm f/2.8 GM OSS with me on a trip to the mountains in June of 2017. I shot it exclusively on the Sony A7R II since I wanted to see the limits of its resolving power. Before leaving, I updated the lens firmware to the just-released version 02 (late May 2017).
My assumptions for a modern 70-200mm zoom is that wide open performance should already be very strong, with f/4 hitting peak performance at least to frame edges. A lens that cannot deliver very high quality results by f/4 has no place in my bag.
On the same trip, I took along the Nikon AF-S NIKKOR 70-200mm f/2.8E FL ED VR, which I shot on the Nikon D810. My goal was not direct comparison, but just to get a sense of both as a byproduct of shooting both for different goals. Yet the comparative results were striking: the Nikon 70-200 delivered imagery in line with the best prime lenses I have used, and the D810 nailed the focus reliably, every time. So impressive, so reliable, the Real Deal as to what any pro could wish for, whether with conventional autofocus or magnified Live View.
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Diglloyd Guide to Mirrorless offers comprehensive integrated coverage of most APS-C and full frame mirrorless cameras and lenses.
Special emphasis is placed on Sony full-frame, including Sony lenses and the high performance Zeiss Batis and Zeiss Loxia lenses plus Rokinon/Samyang and others. Fujifilm X, Olympus and Panasonic M4/3, Sigma dp Merrill and dp/sd Quattro are also covered in depth. Years in the making, it offers a wealth of material for choosing and using a mirrorless camera.
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