EXCERPT page containing first few paragraphs. 2019-05-25 23:30:45
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X3F files converted with Sigma Photo Pro 6.0.1 32-bit, June 2014.
This controlled comparison took over three hours to shoot to my satisfaction (shoot, reshoot, reshoot, ... Difficulties included focusing where desired, focus accuracy and focus shift, differing mounting solutions, and ensuring optimal exposure for each camera.
Focusing in particular was a challenge: the dp2 Quattro and DP2 Merrill offer a small focus spot, but on a coarsely spaced grid, forcing recomposition after focusing, quite a nuisance in attempting a match (and changing the focal plane slightly!) Even manual focus was a challenge for the accuracy needed; the magnified view is so-so at 8X for discriminating fine differences in focus and it is inexplicably and modally restricted to only the focus point in effect when entering magnified view. Perfect focus matching is rarely achievable, but the images are very well matched.
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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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