I shot my 1D-X and all image captures on the display were fine and dandy. I downloaded the CF card into Lightroom and all of the captures were underexposed by 1.0. Yikes! This is the first time the camera has acted up in any way. I tried everything but nothing seemed to solve the problem with my camera. After a quick trip to the Canon Service Center in Irvine, CA, I learned that the exposure problem is a known issue. The repair is covered under warranty including a standard service and cleaning. Whew, I was so happy that the issue was not another bone headed situation that I had caused. Has anyone else experienced this problem?