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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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Diglloyd Infrared Photography covers cameras and lenses for infrared photography.
The coverage explains all the issues involved in shooting for monochrome and in infrared. It is not a review of any particular camera or lens, though many examples are included.
- Monochrome vs color cameras.
- Post processing for monochrome.
- Guidance on workflow for infrared, including black and white and channel swapping for false-color images.
- How infrared renders, and why certain spectral cutoffs matter: false color vs black and white.
- Image quality issues to be on the lookout for in infrared.
- Numerous lens evaluations in infrared.
View an overview of infrared as well as filter spectral transmission plus examples from an optimal lens.
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