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Crops at 28mm — Left Edge
Left edge
All the lenses benefit from f/5.6, though the 16-35 looks good wide open at f/4.
- At f/2.8, all three zooms produce a reasonable image, but all are a bit smeared and lacking in contrast.
- At f/4, the 16-35 produces the sharpest result, though its darker than the others from vignetting. Impressive, since the 16-35 is wide open here.
- At f/5.6, the 16-35 and the 24-70 are looking the best, with the 17-35 and 28-70 very close. The 28/2 is still soft with low contrast.
- Results at f/8 are similar to f/5.6, but with an uptick in contrast for all lenses. The 16-35 shows the highest micro contras, but barely, all the lense are excellent here.
- At f/11, nothing is gained over f/8.
- The 28/2 is smeared at f/2, and requires f/8 for a sharp result, showing a “pop” from f/4 to f/5.6 and then looking good at f/8.
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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.
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- 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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