I have a problem with hillshade function: I've set 315 azimuth, 45 vertical angle and 1 Z factor, but the result is very bad... The original dem file is a .geotiff from Global Data Explorer (Aster Global DEM V2). I would like to obtain a pretty hillshade, but I don't know what is wrong.
Here the original and the screen of the hillshade result. It's 1:660.000 scale