I came across this Photoshop action by Noel Carboni which is claiming to remove the famous Black Dot problem of Canon 5D Mark II that occurs in certain conditions. Actually there are two actions: One that removes black dots to the right of the lights and one that removes them from above. I haven't tested the actions myself but samples and discussions on the forums shows that it does work. Great Job Noel!

As you know, Canon already accepted the problem along with the banding issue, and I hope they come up with a final solution for this problem very soon, something that will not require an action or any kind of post processing of course.

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