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30-megapixel Canon EOS R
Canon RF 28-70mm f/2L

Aperture Series @ 40mm, 70mm: Night Lights

Two series on this page evaluate the Canon RF 28-70mm f/2L at 40mm and 70mm on the 30-megapixel Canon EOS R with lights at night, looking for just how good the point spread function is along with correction for secondary color.

Night lights @ 40mm

Lateral chromatic aberration corrected. Shadows boosted to reveal detail.

At f/2 not everything can be exactly in focus and yet so much is sharp across the frame and from the deck chairs into the building that it is quite impressive. The only real fault to be seen are faint traces of violet fringing on the lights towards the right, but these might be slightly out of focus and this disappears at f/2.8. There is nothing meaningfull to criticize beyond that.

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Diglloyd Guide to Mirrorless is by yearly subscription. Subscribe now for about 25 cents a day ($90/year).
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Diglloyd Guide to Mirrorless offers comprehensive integrated coverage of most APS-C and full frame mirrorless cameras and lenses.

Special emphasis is placed on Sony full-frame, including Sony lenses and the high performance Zeiss Batis and Zeiss Loxia lenses plus Rokinon/Samyang and others. Fujifilm X, Olympus and Panasonic M4/3, Sigma dp Merrill and dp/sd Quattro are also covered in depth. Years in the making, it offers a wealth of material for choosing and using a mirrorless camera.

  • Make better images by learning how to get the best results right away. For example, the best way to set up your Sony camera.
  • Save money by choosing the right lens for your needs the first time, particularly with the numerous lenses available for Sony.
  • Make better images, a sort of “cheat sheet” saving yourself months or years of ad-hoc learning—best practices and how-to and 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.
  • 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 Sony.

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

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