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Sorry Mindbender, this is a problem that has to do with noise, not with JPEG.

Take any consumer level camera and photosgraph with TIFF under the same circumstances and you get the same noise.

Jpeg doesn't compress the RGB channels separately, jpeg affects a flat image. The noise is caused by the quality of the camera and the ISO setting, nothing else. If jpeg would cause these amount of artifacts, then they would also be visible in this amount on any picture taken outiside with enough natural light available.

pdog182, yes, that is a descent camera but with all respect nothing compared to the top brand digital SLR's. These cameras can have their shutter open for several minutes without almost creating any noise.

But then you talk about cameras that cost more than $2,000 US.