EXCERPT page containing first few paragraphs. 2018-04-20 07:39:01
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Aperture Series @ 17mm: Mosaic
This aperture series evaluates image sharpness from f/4 through f/9, along with distortion and color shading and lens symmetry.
Distortion can change with focusing distance; this scene is at far distance. Close-range distortion is likely to be stronger than what is seen here.
Mosaic
Adobe Camera Raw 9.10.1.750. View ACR Settings. Camera Profile = Adobe Standard. No lens corrections used other than the automatic required correction for chromatic aberration.
Focus was near center towards top, with focusing at f/4 on the two pink flowers.
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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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- Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
- Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.
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