Does GeoTIFF imagery conform to the TIFF specification?
The TIFF spec (Version 6) is be supported by the GeoTIFF format. That is, the GeoTIFF images conform in every way to the TIFF formal specifications. The tags used for the “Geo” portion of the TIFF format conform to the acceptable and customary use of “private” or “registered” TIFF tagsets. The GeoTIFF tags and definitions are considered completely “orthogonal” to the baseline and extended TIFF tag definitions currently supported in TIFF V 6 by Adobe/Aldus.