DM3 is an image format used by Digital Micrograph, a program used in transmission electron microscopy, often in order to interface with the hardware made by the company that releases it (Gatan). It contains a large amount of metadata in addition to the image itself. It succeeded DM2 and was succeeded by DM4.
- Digital Micrograph (later incorporated into "Gatan Microscopy Suite") itself
- The DM3_Reader plugin for ImageJ
- Robert McLeod's importer for Matlab
- Fred Sigworth's importer for Matlab