Have tried adjusting multiple settings (f/wb/speed/iso) but I have not seen any real satisfactory results. I am using a D50 and Nikkor AF 70-300 G when it is most noteable. It's really pissing me off. The Water Fowl are coming into Alaska right now so I am shooting birds like a mofo ~ but a great majority of them are blown and there is little I can do in PP to fix it. How do I avoid it from the get go? Get a filter on the lens maybe? If so, what kind? I'll try to suppliment this post with a pic as an example when I get home.