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Hot pixel

Digital Noise with Canon 5D

The Canon 5D has a reputation for very low noise (somewhat exaggerated based on my own independent research; see D2x vs EOS).

While noise with the 5D-IR is low, it is prone to what can be termed “fairy dust”—white pixels scattered over the image which make sharpening difficult [view]. This can be observed in the crops below (be sure to view the actual-pixels images by clicking on them). Here is a specific example:

Unfortunately, the 5D can produce not only fairy dust, but confounding hot pixels even at low ISO values such as ISO 50. Though infrequent, they take some work to spot-out when they do occur.

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