EXCERPT page containing first few paragraphs. 2023-12-02 01:04:08
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This series from f/4 - f/8 looks at peak sharpness under harsh daylight conditions. I am not keen on the lighting or composition, but it is a useful study.
Bristlecone Log On Hillside, Harsh Sunlight
Adobe Camera Raw 9.6 (625): ACR settings, Camera Profile = Embedded. No lens corrections.
It is very difficult to focus an f/4 lens on a scene like this, even with a high-res EVF: it is very eas to focus just a hair too close or too far. For this reason, use of f/5.6 or f/8 is strongly advised with a scene like this.
Sharpness is optimal by f/5.6, with f/8 bringing more depth of field. There are some variations in sharpness near to far (corners oddly sharp at distance versus mildly blurred more central areas at some distance), suggesting a mild field curvature. However, this may actually be due to an interaction with sensor cover glass (increased astigmatism).
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Diglloyd Guide to LEICA contains in-depth coverage of Leica M system cameras and lenses, with additional coverage of Leica M Monochrom, Leica Q.
Special emphasis is placed on Leica M lenses and certain Zeiss ZM lenses.
- 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 the Summilux/Summicron/Elmarit choice and/or Zeiss ZM.
- Make better images, a sort of “cheat sheet” saving yourself months or years of ad-hoc learning. Processing parameters are discussed and shown.
- 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.
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