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DSLRs today offer such impressive performance at high ISO values that a practical approach is simply to accept whatever noise is there, dealing with it in post-processing, just as one had to do with film. For many applications, that’s a perfectly reasonable approach.

Yet it’s still useful to understand the behavior of any particular camera, particularly helpful in considering what ISO to use and how to approach post-processing. And for photographers with specific applications (eg astrophotography, fine-art, sports), noise handling at specific ISOs can be a critical priority.

This page discusses noise issues at high versus low ISO, assessing noise and lens choice.

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Since 2006, Diglloyd Advanced Photography is the authoritative review and reference for DSLRs and their lenses: Canon and Nikon primarily, but also Pentax and some medium format. Reviews of key DSLRs are included, but the primary focus is on lens performance. Also included is a wealth of technique and workflow approaches.

DAP includes thousands of pages of exclusive coverage and high resolution Retina-grade examples detailing Canon and Nikon DSLR bodies and their lenses, with in-depth analysis of sharpness and contrast, color, bokeh, vignetting, distortion, MTF, and flare, behavioral and practical usage.

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