EXCERPT page containing first few paragraphs. 2023-02-08 02:35:58
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This page evaluates bokeh for out of focus point and semi-point sources.
Bokeh depend on a variety of factors:
- Amount of defocus.
- Subject matter itself.
- Number of aperture blades, also straight or curved blades.
- Aperture: wide open (no blades visible) or stopped down (diffraction effects come into play).
- Aspheric vs spherical elements and the means of grinding/shaping them.
Strongly out of focus bokeh
Here the lens is focused near its close focusing limit with the light sources about 21 feet / 7 meters distant, putting them strongly out of focus.
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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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