EXCERPT page containing first few paragraphs. 2018-07-23 06:21:37
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This aperture series explores close range performance which includes the quality of the background bokeh. Color correction is examined as well as overall imaging performance.
A 2-frame focus stack at f/9 is included.
Precocious Cluster of Yellow Aspen Leaves
Wide open at f/1.8, the Sigma 14/1.8 delivers an impressively sharp image on the leaves (shooting distance about 18 inches ) with very good contrast even on fine details. The other leaves are very good also but not quite in focus. Going to f/4.5 solves that.
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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 28 megapixels filling up to 5K display, 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.