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50MP Canon 5DS R
30MP Canon 5D Mark IV

ISO Series from 100 to 25600 vs Canon 5DS R (Dolls)

This page assesses noise with the Canon 5D Mark IV across the ISO range from base ISO to ISO 25600. As a reference point, the Canon 5DS R is included at both the Canon 5D Mark IV resolution and at full native resolution.

Per pixel noise is an erroneous way to compare noise, since higher megapixels means less enlargement. Hence this page compares the Canon 5DS R noise to that of the Canon 5D Mark III by downsampling its images to the 5D Mark IV resolution, but also includes the full native resolution of the 5DS R.

At lower ISO values, cameras with higher pixel density tend to perform similarly to those with lower pixel density at equivalent magnification (“print size”). But as ISO rises, color quality and chroma noise typically are less good with higher pixel density, due in part to a lower signal/noise ratio on each pixel.

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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.
  • Save money by choosing the right lens for your needs the first time, particularly some of the new Sigma Art lenses vs Nikon and Canon.
  • Workflow discusses image organization, raw conversion and post processing. Many examples show processing parameters for direct insight into how the image was converted.
  • 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.

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

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