I received a Canon GP-E2 yesterday, and used it on my Canon 5D Mark III. It encodes GPS coordinates and compass bearing directly in RAW files.
I shoot in RAW, and import the RAW files into Lightroom 4.1 using the "copy as DNG" option.
After importing my test shots into LR, the GPS coordinate data showed up as expected in the EXIF metadata, as did the altitude. However, I do not see any indication of the compass bearing.
When I use the Canon utility software that came with the GP-E2, it does display compass orientation on its map display, so bearing is obviously being stored in the RAW file.
My guess is that Adobe's DNG specification has no tag or field for bearing yet.
If anyone has any greater knowledge or understanding about this, I'd appreciate learning more.
I'd also like to know if Adobe has plans to update DNG to capture this information.
The GPS image direction and reference are in the EXIF data in the 5DM3 raw files and also in the .dng files I have from my 5DM3/GP-E2 combo. I performed the CR2 to DNG conversion using Lightroom 4.1.
Not all EXIF editors/viewers are updated to show the GPS Img Direction Ref and GPS Img Direction fields.
Phil Harvey's exiftool 8.89 is one that does show the data, if present, when reading .dng files. At this time Lightroom apparently does not.
I wish lightroom could exploit this technology to the fullest. If one could used the GPS, FL, Compass to overlay on a map/sat image the field of view you could end up with some really cool 'gagets' that could be reused on the web. The need to integrate Lightroom and Flash to harness this. Currently its really nice how the show the thumb on a google maps overlay. Accurate GPS like GP-E2 shows you diffences of as little as 10 ft. Additionally Lightroom Map Module needs to make stuff with the GPS in print and electronic formats that could be reused elsewhere.
You can add your vote for this feature here http://feedback.photoshop.com/photoshop_family/topics/add_image_direct ion_in_map_module