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EXCERPT page containing first few paragraphs. 2022-08-17 21:35:20

Sony A7R II
Sony FE 70-300mm f/4.5-56 G OSS

Aperture Series @ 80mm: Wyman Cabin

These aperture series intentionally uses a 3D subject to pin down both performance and any optical asymmetries across the frame.

Wyman Cabin @ 80mm

Adobe Camera Raw 9.7.0 (668): Camera Profile=Adobe Standard. Built-in lens profile eliminates lateral chromatic aberration (red/cyan color fringing). Chromatic aberration is corrected via an embedded profile, enforced by ACR. Apertures f/9 and f/13 were sharpened to counteract diffraction.

Vignetting is mild at f/4.5 and nearly gone at f/6.3.

Focus was on the orange vertical boards just above center and towards the right side. Results are lackluster until f/9, with a troublesome symmetry issue: the left side near the cabin never gets sharp yet the far distance sharpens up nicely even as the right side is blurred in the distance (as it ought to be). This is obvious even at the reduced size of 4320 pixels, and even at f/13 the left/right asymmetry can be seen in the distant hillside.

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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 4.5,6.3,9,13 available in full article
f4.5 @ 1/20 sec, ISO 100; 2016-06-08 19:07:17
Sony A7R II + Sony FE 70-300mm f/4.5-5.6 @ 80mm

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