Water Color effect, can someone show me what it is?

I think so many things are taken totally out of proportion here on these forums.  I was reading the Nikon forum and there everyone is complaining about dust ( like its something new ) has always been there on these cameras and you just live with it , clean it and enjoy taking photos :-).

Sometimes I think some do nothing but buy cameras to just investigate if there is a problem , then enjoy talking about it endlessly like its the end of the world ;-).

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Nikon , Fuji