Wednesday, March 24, 2010

First confirmed XMP in original images

I think I now have enough samples to conclude that Canon is embedding XMP into images directly from the camera. Currently the XMP contains only a single tag, "Rating", which has a value of 0 in all my samples. While I thought there was a chance that all of my samples had been modified by some Canon software utility which added the XMP, I have now obtained enough samples from different sources that I believe this is not the case. The samples I have with XMP are from the following PowerShot models: A3100IS, SD980IS, SD1400IS, SD3500IS and SX210IS.

This is significant because in the past the limitations of EXIF have forced camera manufacturers to store information in a proprietary format in images, limiting its usefulness. But now that manufacturers are embracing XMP there is a chance that some of this information could be put in a more useful format.

For instance, it would be GREAT if cameras like the Panasonic DMC-ZS7 stored its location information (Country, City, State, etc) in XMP. Currently this information is stored in the maker notes, which means it is unavailable to most software. (The only reasonable option with the maker note solution is to use ExifTool to copy the information to XMP, which is one of the very useful functions of ExifTool, but in an ideal world this would not be necessary.)

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