Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2021-12-04 15:49:52


Wide open, the 70-200mm f/2.8L IS II is so much better than the original model at f/2.8, that this factor alone might be reason alone to upgrade for those who regularly shoot at f/2.8 - f/4. Gone is the dull veiling haze of the original model, instead we see excellent detail and high contrast over most of the frame at f/2.8, with only the edges and corners showing slightly low contrast. Only a lens like the 200mm f/2L IS can improve upon this performance.

The 70-200/2.8L IS II appears to have performance in reserve for a future 30 - 40 megapixel camera, but that presumes perfect optical alignment of lens, camera and sensor, along with exacting focus precision.

Precision requires care

The highest level of performance seen with sample #6 takes a bit of luck: two of the first five samples were as sharp but skewed left/right, and three were clearly inferior.

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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.

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