Unless otherwise noted, examples are processed straight from DPP with little or no post-processing, in order to show the image quality as produced from the camera.
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This was taken in window light, with white balance set to Cloudy. At ISO 400, noise is remarkably high in this very demanding color medley. A hot pixel is seen at right (see crops). The red tomatoes have a chunky and coarse-looking noise. With strong colors like this (pure reds), noise is pronounced, something to be aware of. But even the light purpose on the spray bottle at left has visible noise.
I rate the noise here as barely acceptable for ISO 400, especially when the color areas are considered. It is a bit surprising, but that’s the nature of noise: it shows up in ways that are often not understood by simple by-the-numbers approaches.
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