EXCERPT page containing first few paragraphs. 2019-02-20 08:41:14
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Shot in pixel shift mode at f/11 (which diminishes micro contrast, from diffraction). The texture in this image reminds me strongly of the Sigma DP Merrill cameras, only with vastly lower noise and much superior color. The Pentax HD FA 50mm f/1.4 SDM AW is a superb optic, which helps greatly.
Look for pixel shift defects—they are absent, quite amazing with a 4-second exposure (16 seconds total). Four pixel-shift exposures means 4X the light gathered, for ultra low noise and effectively a true color sensor. Color aliasing and moiré are banished, noise is cut in half and color accuracy rises. It all adds up to in image quality which cannot be stated simply as megapixels.
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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.