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Crops at 24mm — Right Edge
Right edge
This area at right is lower in the frame than the love crop at left, more centered vertically.
Off-center results are often more telling, because optical quality as well as build quality come into play.
- The 24-70 looks much better here at right than on the left, suggesting an optical alignment issue. It’s similar to the 14-24 at f/2.8, but takes the lead at f/4, and peaks at f/5.6.
- At f/5.6, all the zooms are looking very good, with the 16-35 and 24-70 looking a bit crisper than the 14-24 and 17-35.
- At f/8,all the zooms are looking very good, but the 14-24 lags slightly, with alower contrast and slightly less definition. The 24/2 now closely resembles the zooms.
- At f/11, there is nothing gained with any of the lenses; they all lose contrast due over f/8, going dull.
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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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