So I've got my new 6D, and I've been having a great time with it. It is an amazing piece of technology. I noticed a few days ago that somehow a thread or hair had worked it's way either onto my sensor or the back of my lens. I'm guessing when I changed lens. So today I got my trusty little blower cleaner and was able to get rid of whatever the thread was. Now when I look through my viewfinder I see a small spec. When I take an image there is no spec, so I'm guessing it's somehow on my lens prism or inside my viewfinder. I'm not sure how to attack this problem. I hate to have to take it in to a repair shop already considering I've had it for a month and a half. Any suggestions?