Silver Creek Pano

Here's a pano of Silver Creek I took and generated yesterday.  I use Adobe Photoshop CS5's photomerge tool.  Stitching together 76 RAW images took a minimum of 2 hours on my computer.  I just left it working and did other things.  After stitching the images together the single file is now 173 mb and 59.8 megapixels.  I used my 50 mm prime lens, shot at f8 and used auto exposure lock and auto focus lock(AE-L & AF-L).