I'm trying to read the GPS data from file (A)-TIFF and write it to file (B)-TIFF. The reading part is easy, but for writing the trouble starts. I assume the reason is that (B)-TIFF was created by simply saving a file named (B)-PSD in TIF-Format as (B)-TIFF, hence (B)-TIFF only contains EXIF data that is also contained in (B)-PSD.
The question is: "How can I add non-exisiting tags to (B)-TIFF from (A)-TIFF ?"
Further background information:
The file (B)PSD is a panoramic image and contains several images that are almost equal to (A)-TIFF (except image data and DateTimeOriginal). As (A)-TIFF is geotagged (via gpsphoto.pl) I can read its gps-information, but I was not able write this data into (B)-TIFF.
My attempts to fiddle around with the command below failed: