Microsoft HD Photo Plug-In for Adobe Photoshop
The Microsoft HD Photo Plug-In allows you to open and save any HD Photo file (.wdp or possibly .hdp) in Adobe Photoshop. The HD Photo plug-in supports a wide range of pixel formats (including high dynamic range, wide gamut formats) and numerous advanced HD Photo features. HD Photo is also known as Windows Media Photo. This plug-in is designed for use with the CS2 or CS3 versions of Adobe Photoshop software running under Microsoft Windows XP, Microsoft Windows Vista or Mac OS X.