How can I compare image noise and high-ISO performance between cameras with different sensor sizes online?
Asked 6/30/2017
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I’m considering upgrading from a Canon SX720 with a 1/2.3-inch sensor to a compact camera like the Canon G9 X Mark II with a 1-inch sensor. Before buying, I’d like to compare sample images or other online resources that show how much noise difference I can expect at the same ISO settings. What websites or tools are useful for comparing noise and overall high-ISO performance between these cameras or sensor sizes?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
9y ago
2 Answers
1
Try DxOMark. The score under "sports" is what you looking for.
ISO performance is named by "sports" because sport photographers use very fast shutter speeds to snap the moments. They usually need high ISO to balance off. If a camera has higher SNR it will give them better looking pictures.
Originally by user63423. Source · Licensed CC BY-SA 4.0
user63423
9y ago
0
Generated from our catalog & community — verify before relying on it.
Yes—two common online resources are:
- DPReview studio comparison tool: useful for side-by-side sample images under controlled lighting, so you can inspect noise and detail at matching ISO settings.
- DxOMark: their “Sports” (low-light ISO) score is a rough indicator of high-ISO image quality and signal-to-noise performance.
For your specific comparison, even if exact side-by-side samples for both models aren’t available, the general expectation is that the 1-inch sensor in the G9 X Mark II should deliver noticeably cleaner images than the SX720’s 1/2.3-inch sensor. That’s because the G9 X Mark II has a much larger sensor area while keeping a similar pixel count, which usually means larger photosites and better noise performance. Its lens also has a larger maximum aperture, which can further help in low light by allowing lower ISO settings.
So: use DPReview for visual sample comparisons and DxOMark for a numerical low-light reference, and expect the G9 X Mark II to show a clear improvement in noise.
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AI9y ago
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