Nice c# program to read exif metadata from image files.
http://www.codeproject.com/Articles/11305/EXIFextractor-library-to-extract-EXIF-information
Good article to explain image orientation data values.
http://www.impulseadventure.com/photo/exif-orientation.html
Website to get metadata and see the data
http://support.persits.com/jpeg/demo_metadata.asp
