Here is a shot of the moon taken using a Canon 350 DSLR (DSLR's are not the best cameras to use for the moon and planets) along with a 4" Achromat scope fitted with one of the new Semi-Apo minus violet filters. As you can see no colour fringe around the bright limb of the moon at all.

Here is another view (a much better one) of M27 The Dumbbell Nebula