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EXCERPT page containing first few paragraphs. 2021-09-26 03:01:02

Nikon D810
Nikon AF-S Nikkor 200mm f/2G ED VR II

Sharpness and Focus Shift at Close Range, Dolls (Nikon D810)

This scene was shot for an initial check of the Nikon 200mm f/2 ED VR II, just to see sharpness and rendering style. It shows sharpness and rendering style at close range, as well as assessing focus shift at close range. See also the explicit test for focus shift at medium distance.

How well the Nikon 200mm f/2G ED VR II holds or does not hold focus with stopping down (focus shift) is assessed here at a shooting distance of about 8 feet / 2 meters.

Lenses can exhibit focus shift that worsens at close range. This scene shows what is likely the worst case, or close to it, with the medium distance scene showing happier results. Still, if one is shooting at close range, it is worth understanding the focus shift behavior at this range; there is no margin for focusing error due to razor thin depth of field.

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Diglloyd DAP is DSLR-oriented, but also contains workflow and other topics. Much of the focus is on Canon and Nikon but also Pentax and Pentax medium format.

Special emphasis is placed on lens evaluation, focusing on Canon and Nikon and Sigma lenses, but with a few others like Rokinon/Samyang.

  • Make better images by learning how to get the best results right away.
  • Save money by choosing the right lens for your needs the first time, particularly some of the new Sigma Art lenses vs Nikon and Canon.
  • Workflow discusses image organization, raw conversion and post processing. Many examples show processing parameters for direct insight into how the image was converted.
  • Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to full camera resolution, plus large crops [past 2 years or so].
  • Real world examples with insights found nowhere else. Make sharper images just by understanding lens behavior you won’t read about elsewhere.
  • 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.

Want a preview? Click on any page below to see an excerpt as well as extensive blog coverage, for example on Nikon or on Canon or on Pentax.

Aperture series 2,2.8,4,5.6,8,11,16 available in full article

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