Sunday, 1 August 2010

Grain Does Not Equal Noise

Overcast MIA Geometric Glow Velvia

This is a good example of how even in a colour photograph grain can be nice. The fundamental difference between digital sensor noise and grain is that sensor elements are arranged in a rectangular grid whereas silver clusters (or, in colour film, dye clouds) are randomly arranged and spaced. This gives a much more organic texture and can actually enhance some images.

This is a very fine grained film and normally would not show graininess but this particular image is a tight crop of a 35mm frame so it is greatly enlarged, making the grain visible.

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