I'm absolutely certain about the fogging. I had a band of fog that was confined to inside the sprocket holes. It never came close to the image area. If I have time later today, I'll scan a strip and post it to show the pattern. I always shot the thing in panoramic mode, so I don't know what it would look like when switching back and forth.

If you want the 87C filter, you can get it here:

http://www.bhphotovideo.com/bnh/cont...ilter+87c&ci=0