frankg wrote:
CS2 CameraRaw
When saving RAW files as Tif a separate xmp file is saved. I understand that this is a Metadata file but why is it a separate file ?
I think what you are seeing is the XMP sidecar file that holds the edits and settings of the raw conversion in ACR 3.x. I suspect it is not actually to do with the TIFF file. If you look inside it, (it is a structured text file that you can view with notepad, Word, etc), you will probably see things that relate to the sliders you set in ACR. For example, if you crop, you should see the coordinates of the corners.
ACR keeps its metadata separate from the raw file unless it is converting DNG files. The reason is that, except for DNG, Adobe doesn’t know enough about the raw file format to be able safely to write the metadata back to the raw file. (And the raw file concerned may not actually support XMP metadata).
When ACR 3.x edits DNG files, it saves the settings into the DNG file itself (in a non-destructive way). Adobe knows how to do this safely. (So can any other software, because it is a published format). For some people, (myself included), this is one of the valuable features of DNG. So I guess you are not using DNG.
—
Barry Pearson
http://www.barry.pearson.name/photography/ http://www.birdsandanimals.info/