EXCERPT page containing first few paragraphs. 2024-04-18 06:53:12
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70mm: vs 70-200/4L IS
Important details on the introduction page should be read prior to viewing these crops. Those details are not repeated here.
This comparison was made with the first sample. See also sample #6.
Center
This is where the lens was focused.
The 70-200/2.8L IS II is crispy crunch sharp wide open, with finely etched detail. Stopping down to f/4 achieves nothing except to brighten the image slightly. Stopping down to f/5.6 maintains the quality, stopping down to f/8 shows slight loss of micro contrast due to diffraction, and f/11 shows clear loss of micro contrast. One cannot ask for better performance.
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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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