Tag Archive: London photography course

Image of Mbulelo Ndabeni dancing in hoodie, his face expresses something between concern and terror. He is holding a slatted bench at an angle and appears to be peering out at the camera as if ready to hide behind it or run away at any time. Image has little or no detectable noise (speckling) despite being taken at ISO 3200.

Colours at high ISO part 2, Signal to Noise

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The different types of noise (chroma and luminance), signal-to-noise ratio and their relationship with high ISO photography.

Girl with large eyes wearing a Christmas hat and white toga-style top. You can tell it is very dark because the image is extremely grainy, there is considerable colour noise and the colours are not true.

Colours at high ISO

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This post talks about how camera technology perceives colour and why photographic images are so different to what human beings see.