Noise - DXOMARK
Noisy images with increasing standard deviation of noise (left image SD=2, center image SD=4, and right image SD=9). 3. Dynamic Range. Dynamic range is defined as the ratio between the highest and lowest gray luminance a sensor can capture. However, the lowest gray luminance makes sense only if it is not drowned by noise, thus this lower boundary is defined as the gray luminance for which the ...