EXCERPT page containing first few paragraphs. 2023-03-25 03:05:52
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Aperture Series: Mountainside At Dusk (D810)
A distance scene (infinity focus) is about as tough as it gets for a fast lens; any optical asymmetries stand out like a sore thumb, field curvature can be a serious problem requiring f/5.6 or f/8 to overcome with some lenses.
As well, this scene was taken in very blue light (about 12000°K), which is a tough challenge for any lens, the blue/violet area of the spectrum being the most difficult to correct, and causing longitudinal chromatic aberration (violet hazing in particular) to stand out against dark areas.
Mountainside At Dusk
Adobe Camera Raw 9.3.1 (520): ACR settings, Camera Profile = Adobe Standard
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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.
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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.
- Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.
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