Editing Foveon X3 sensor (section)

===Noise===
The Foveon X3 sensor, as used in the Sigma SD10 camera, has been characterized by two independent reviewers as noisier than the sensors in some other DSLRs using the Bayer sensor at higher [[film speed|ISO film speed equivalents]],<ref>
See, ''e.g.'', c|net Reviews, [http://reviews.cnet.com/Sigma_SD10/4505-6501_7-30588638.html Sigma SD10] Retrieved March 6, 2007 and Steve's Digicams [http://www.steves-digicams.com/2003_reviews/sigma_sd10_pg7.html Sigma SD10 review] (November 28, 2003) Retrieved March 6, 2007.
</ref> [[colorfulness|chroma]] noise in particular.<ref>Camera Labs: [http://www.cameralabs.com/reviews/Sigma_DP1/sample_images.shtml Sigma DP1 Gallery]
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[http://reviews.photographyreview.com/blog/sigma-dp1-review/ Sigma DP1 Review], photographyreview.com
</ref> Another noted higher noise during long exposure times.<ref>Imaging Resource [http://www.imaging-resource.com/PRODS/SSD10/SD10A12.HTM Sigma SD10 review] (First posted 10-22-03.). Retrieved March 6, 2007.</ref><ref group="n">This observation is consistent with a comparison of the images, displayed in ''Digital Photography Review,'' taken by the Sigma SD10 ([http://www.dpreview.com/reviews/sigmasd10/page14.asp see here]) with those taken approximately contemporaneously of the same scene by the Bayer sensor-equipped Nikon D70 ([http://www.dpreview.com/reviews/nikond70 see here])/page15.asp. Both retrieved March 6, 2007.</ref> However, these reviewers offer no opinion as to whether this is an inherent property of the sensor or the camera's image-processing algorithms.

With regards to the Sigma SD14, which uses a more recent Foveon X3 sensor, one reviewer judged its noise levels as ranging from "very low" at ISO 100 to "moderate" at ISO 1600 when using the camera's [[Raw image format]].<ref>
{{cite web | url =http://www.popphoto.com/gear/2008/12/camera-test-sigma-sd14 | title = Camera Test: Sigma SD14 | author = Michael J. McNamara|date=December 2008 |access-date=June 6, 2013 }}
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