The ISO still-life in full
100% crop at ISO 100 shows heavy processing
ISO 200 shows no visible difference to ISO 100
By ISO 400 noise is becoming more apparent with a loss of edge sharpness and detail
By ISO 800 the image has become noticeably softer
At ISO 1600 noise has degraded the image quite considerably although it remains usable at smaller sizes
ISO 3200 shows not only a loss of detail and sharpness but a marked drop in colour saturation too
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