I have been working on an update to my original DxOMark article. That update has just been published on Luminous Landscape, a well-known photography site operated by the Canadian landscape photographer and publicist Michael Reichmann.
A slightly newer version of the article is available at the DxOMark website. It features four extra cameras and almost identical text.
The article covers various aspects of image sensor size and its impact on image quality. The article is built around original benchmark data measured by DxO Labs. I have rehashed their data (with permission) to stress basic trends and highlight a few topics:
- Benchmark data for over 180 high-end cameras (starting at about $400).
- Which benchmark numbers by www.dxomark.com are most relevant for your needs?
- The technical relationships between sensor noise, dynamic range and resolution.
- A comparison of what noise does at low ISO and at high ISO (this is trickier than “doubling the ISO reduces the signal-to-noise ratio by 2×”).
- The implications of using “mirrorless” cameras (and associated smaller sensors) on image quality.
- The image quality of the new wave of cameras that use Sony’s new Exmor sensor with its excellent low ISO dynamic range performance. With a bit of speculation of whether Canon (that normally doesn’t use Sony sensors) can catch up with Nikon (that does regularly use Sony sensors).
You can contact me about the article via comments on this website. I will also try to keep an eye on comments on the LuLa and the DxOMark fora (forums).