This page investigates performance of the quarter tones (near black), an area of performance rarely explored yet extremely useful in any dynamic scene, or with underexposed images. While this issue applies to any ISO, it should be of particular concern for anyone seeking the absolute best image quality, which means using low ISO values. Please see Low vs High ISO for more about this important area of performance.
Near-black performance is also highly relevant to current DSLR features like Nikon’x Noise Amplified for more.and Canon’s . See
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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.
After applying Shadows/Highlights as detailed below