The brief for this exercise calls for a series of captures at the camera's full range of ISO settings with the intention of demonstrating noise. Noise may be the result of insufficient photons striking the sensor and may occur when shooting under low light, with long shutter speeds, or high ISO settings. The result is the speckling effect seen in the right image in the pair above, showing captures at 80 (l) and 6400 (r) ISO.
I shot Asura in a foam-core set using the Sony RX-100 on a tripod in AP. While the camera offers an auto-noise reduction feature, it is not available when shooting RAW. Images were imported to LR, where the only adjustments were to WB and sharpening, before being exported as JPGs. Text was added to JPGs in Paint.
The results reveal an increasing level of noise in the dark areas of the image, most notable in the figure's shadow, as well as the rear piece of clothing.
The pair above shows the 800 ISO image Before (l) and After (r) the addition of Luminance (+35 on the LR sliding scale). Compare this below with the 100 ISO image (l) and the 800 + 35 Luminance (r).
The outcome is fairly close, demonstrating that while noise may be an inescapable reality at capture, it can be doctored to produce acceptable images.
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