I recieve very large geotiff files. In order to work with them, I use a software that converts them to a jpeg for me. When they are done converting they have both a world file and a .prj file.
But when I load them into ArcMap they have no spatial reference. They only way they can be projected correctly is if I go in through the catalog and change the projection.
Any Ideas why the .prj is not even showing up?