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Crops at 16mm — Focus

Center

This is the spot focused upon using Live View.

The distortion of the 16-35 is substantial at 16mm, making it hard to figure the best match (since it varies across the frame). In this example, the 16-35 enjoys a 3% magnification advantage at center, which means it’s about 6% larger in area there. At the edges it’s about 0.6% at the edges (linearly), or about 1% larger in area.

At f/4, both lenses are excellent, exhibiting very nice micro contrast. The 14-24 declines slightly from there, but the 16-35 maintains a very high level of performance. The difference between the two is most notable at f/8. While some of the difference can be attribute to the 3% magnification advantage, not all of it can.

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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.

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