David Bergman just made a 20 GIGApixel photo at Yankee Stadium. Below is a behind-the-scenes video showing him shooting it and some of the prints in production. Here's what Bergman said about the project:
I shot 825 Canon 5DsR images (50 megapixels each) at Yankee Stadium a few months ago and stitched them together to create a 20,000 megapixel photo. It might be the largest resolution image ever made at a live event (as opposed to a static landscape shot). A 130-foot long, 20-foot high print was on display at the Canon Expo in NYC. You can even read the prices at the hot dog stand over 400 feet away.
I'd recommend hitting the FULL SCREEN button near the lower right of the video.
Direct link: vimeo.com/139312923