That sure is a green hue! That sucks man, I'm sorry. Have you taken any pictures of the Sun, or bright like a welding arc? It's defiantly not moisture.
If you recently purchased it, try to get it warrantied where you got it. Otherwise you'll have to send it to Samsung for warranty repair.
i have similar issue, but it comes and go.. there are days when pictures are taken normally.
i won't return mine for warranty, i think they would replace it with the new product!