EXCERPT page containing first few paragraphs. 2021-06-19 06:35:40
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This assessment using the Sony NEX-6 with Metabones SpeedBooster plus a variety of 50mm lenses, all at f/5.6 (since maximum aperture varies so greatly). Certain lenses such as the Nikon 50/1.8 AI could not best tested because they would not mount due to physical reasons.
Aperture f/5.6 is two to five stops closed down for each lens, and represents the peak performance that can be expected (setting aside depth of field). Use of f/8 might make further improvements in some areas via more depth of field. Note that on manual-diaphragm lenses, f/5.6 is marked f/8.
Native optical performance is shown; correction of any lateral chromatic aberration is advised, but has not been done here in order to show the true optical performance as shot.
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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.