The original (and portable) purpose of XMP (whether embedded in an image file or present as a sidecar) was to carry custom metadata such as title and author information - not image adjustments, but textual information for cataloging/identification purposes. Note also that the original purpose of XMP was not to store RAW adjustments, and the storage of RAW adjustments is mostly in the form of extensions that vary between programs (and thus their interpretation will vary or will be omitted when transferring them between programs). As long as he got close to the final results of the RAW development process, any adjustments/changes you would make from there probably would benefit little if at all from restarting the process from the original RAW. If the photographer had already made the appropriate adjustments on the RAW image, he should have exported a high-color-depth, full-resolution version as a TIFF or PNG file and sent you that as a starting point. You would still need an exported reference from the photographer to compare against to finish adjusting the values to match, and even with one, you may only get close, as one program may not be able to 100% match the output of another unless you recreate the image pixel by pixel. Just because the XMP files transfer values between them, those values will produce different results in different programs which use different algorithms for similar tools - you would not get the exact look the photographer intended unless that photographer was using the same software you are. Different programs apply these values differently. I wanted to use those adjustments, but I couldn't because AP doesn't understand XMP files.Įven if it did, you would only get an approximation at best of the adjustments that photographer intended.
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