So I just got my P4P+ on Tuesday. We had a thick fog this morning so I took the opportunity to take a few shots. I've been flying my P3A since it debuted, but I've never had this issue with my HDR photos. When I pull the photos from my P4P into Photomatix and run HDR (this was a 5 shot AEB) I get these black rings around the edges of the photo (this is happening on every single photo too, whether shot into the sun or away from it). If I look at any individual photo, I don't see the ring, but when I merge to HDR, they're there. Any ideas what I can do to fix this?