Welcome. The biggest issue with your new toy is that you have lost your alibi. Now when I have a photo that comes out poorly, I can no longer blame my camera.....it is my fault! I am looking through some recent pictures from my son's graduation taken indoors at 400mm f/8 with iso 12800 and they are pretty decent even before PP. These would never have been at all possible with my 50D. Some of the "non-keepers" are the ones where I inadvertently focused on the podium instead of him as he walked across the stage! I've got to work on using focus points and the AF scenarios" better. An ongoing learning experience. I am still amazed by the look of pics I have been getting.