After reading allot of forms it seems like the 20D has some issues with
showing banding in their pictures only taken at a hi ISO of 800 plus. Some
claim theirs do not show this and others show some not very good pictures
with this banding showing badly. Some pictures have to be brought in
brightness to show the shadow highlights and there it is. I know some say
there is a work around ( Like trying to learn to drive a faulty car with
problems ) on how you take the picture but are some of us stuck with ...