EXCERPT page containing first few paragraphs. 2022-01-19 21:41:05
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This image is a simple one, yet serves to illustrate both field curvature as well as color aberrations and sharpness across the field. Image made on the Canon 5D Mark III.
As a side note, the Canon 5D Mark III sensor is amazingly noisy at ISO 100 with a 1/2 stop push. The whole image has a gritty/grainy feel to it. It is why I greatly prefer my Nikon D800.
Field curvature analysis
The entire frame is shown further below under the color fringing analysis.
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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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- 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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- 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.