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Leica M10-R
Leica 50mm f/2 APO-Summicron-M ASPH

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Aperture Series: Lone Pine Peak and Mt Whitney Sunrise from Alabama Hills (Leica M10-R)

This aperture series from f/2 through f/8 examines sharpness across the field and near to far, taking a critical look at field curvature, which is pronounced enough to cause dramatic differences in sharpness across the field, a headache for this type of photography. But the main thing is you can get far better performance 3 stops earlier with 50% more pixels for 1/8 the price.

I had been having some trouble figuring out the disappointing results with the 50/2 APO in a variety of situations—it performed poorly in the outer zones when focused near the center on everything. It was a puzzler, but this series is a revelation as to what is going on.

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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, Leica SL.

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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Aperture series 2,2.8,4,5.6,8 available in full article

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