EXCERPT page containing first few paragraphs. 2021-02-28 16:21:16
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This comparison evaluates noise from ISO 50 to ISO 12,800 in a real world scenario with a high contrast range. Contrast control was used during raw conversion to a degree often needed in many images (to open the shadows and to keep the highlights from blowing out).
Image are presented in both color and black and white, since the Canon 5DS R makes a terrific black and white camera. The grayscale version is a conversion using Default in Photoshop from the ProPhotoRGB color space to minimize noise (use of the sRGB or AdobeRGB color spaces can exacerbates noise. See Wide Gamut Colorspace Reduces Noise, Avoids Posterization).
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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.