EXCERPT page containing first few paragraphs. 2023-03-29 06:29:06
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Aperture Series: Sidelit Barn (Pentax K3)
Pentax K3, shake reduction off.
This aperture series evaluate the Pentax HD Limited 21mm f/3.2 on a real-world subject that includes front-to-back detail to assess sharpness and to rule out field curvature.
Please see the additional notes on a similar comparison with the 15/4 ED.
Overall the 21/3.2 delivers high contrast and rich color, an excellent performance in visual impact. Vignetting is moderate at f/3.2, well controlled at f/4, and resolves at f/5.6. Aperture f/3.2 is a little dark relative to f/4. and so the T-stop(transmission) is likely closer to f/3.3 or f/3.4.
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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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- 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.
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