Groundstone Photo-Microscopy Comparative Database
About this database:
The collection of photomicrographs and photographs posted here is intended to facilitate data sharing and comparisons between different experimental use-wear programs. The images can also function as a teaching aid, or as a supplemental resource for use-wear analysis of ground stone. For more information on the experiments that produced the images on this site click here
Many of the photomicrographs presented on this site have been digitally processed to enhance the depth of field and highlight topographical details that may be useful in discriminating between microscopic wear-patterns on the surface of the stone. A normal photograph, especially under high-magnification, is limited to a narrow depth of field and therefore can only bring topographical features within a certain range of depth into good focus. Focus stacking is a technique that involves taking numerous photographs at different focus levels and then using software to digitally "stack" them into a single composite image that contains the full range of focus of all of the photos.