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Solano County, California, US
"RE: Love at first grip!"
Hussain,If this is happening at 6400, it's just normal high ISO low light noise. This should disappear when you go down a little in ISO. The blue dot at any ISO could be a piece of transparent dust on the sensor. You could try blowing it off as described at the Copper Hill cleaning site. It could also be a stuck or hot pixel.Does it only show up at high magnification? How high?Could you post an example or put one in your gallery?Also, regarding feel and build quality, to back up what you said, I have sold people on D### models without saying a word--just by letting them try out my camera! Sometimes words are not necessary.