EXCERPT page containing first few paragraphs. 2019-02-17 10:59:30
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The Olympus 17mm f/1.8 offers a manual focus mode when the focusing ring is pulled back, exposing the distance scale as shown below, but there is a fundamental defect in using the “pull back” mode: the focus changes to a coarse “stepped mode”, with steps too huge to be useful.
The 17/1.8 can also be focused manually without pulling the ring back in a stepless (continuous) mode. That is the better approach as will be shown.
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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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