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Sharpness—extensive comparison
Please see the first page in this series for background material, including a discussion of how to evaluate sharpness.
Making a sharpness comparison with a different lens on each camera would introduce an unacceptable variable. For this test, the stellar Coastal Optics 60mm f/4 UV-VIS-IR APO Macro was used on both cameras.
This example also yields one of the best possible scenarios for the Canon EOS 1Ds Mark III: the lens is optimal, depth of field is optimal, and lighting contrast digs out all possible detail. If any example can show how much more detail is possible in 21 vs 12 megapixels, this one can!
Downloading the RAW files
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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.
