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M240 at 28mm vs Sigma DP1 Merrill: Downsampled Resolution

This page compares the M240 + 28mm f/2.8 Elmarit-M ASPH against the Sigma DP1 Merrill using the same image as the two prior pages; this were native resolution and matched resolution, this page is also matched resolution but with the M240 downsampled to match the Sigma DP1 Merrill.

See the testing comments on the M240 + 28mm vs Sigma DP1 Merrill Native Resolution page.

Downsampling reduces digital artifacts and generally increases per-pixel quality in every way. It is another way of comparing cameras with two different resolutions. In particular, a higher resolution camera when downsampled to a lower resolution and given appropriate sharpening should outperform on a per-pixel basis, all other factors being equal.

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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 and Leica S.

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 28 megapixels filling up to 5K display, 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.

Want a preview? Click on any page below to see an excerpt as well as extensive blog coverage, for example on Leica.

       
   
Leica M240 + Leica 28mm f/2.8 Elmarit-M ASPH
Sigma DP1 Merrill (28mm equivalent)
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