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Message: <blockquote data-quote="pforsell" data-source="post: 669923" data-attributes="member: 7240">1. Lower exposure = less light = more noise.2. Sharpening = increases visibility of noise.3. Soft or misfocused picture -> aggressive sharpening -> terrible noise.4. Artificial light (for example tungsten) = more noise. (weak blue channel will be very noisy)5. Image size reduction = less visible noise.The images originated in a 46 megapixel camera and are now 0.4 megapixel. It is difficult to give very good feedback on the images you posted, since they are pretty small. The image size reduction has masked and/or hidden any noise that may or may not have been there. You have discarded almost all (99.2%) of the data and one would have to be a clairvoyant to be able to tell what the images were in the beginning.</blockquote>