On Tuesday, the Joint Photographic Expert’s Group (a.k.a. “JPEG”) announced a new work item for the standardization of Microsoft’s HD Photo as JPEG XR (XR is short for “extended range” — a reference to its improvement over the original JPEG standard). You can read the publicity details in the Microsoft press release and the JPEG press release, but beyond the public relations pieces I wonder if you are thinking about HD-Photo/JPEG-XR for digital archiving. And if you’re thinking that I’ll bet your wondering about how HD Photo compares with JPEG 2000. As with many things, the devil is in the details, so here is a first, gut-reaction pass at the details.