Your DEM (digital elevation map) data file can be converted to a tif using something like this:
then of course you can open the tif in Photoshop. But you cannot open a .dem directly in photoshop.
DEm as in map files = yes Photoshop can open many of these... some are special and locked
OpenDEM as in the 3d standard = yes Photoshop can open most of them... imo Obj is a better file type for cross platform work
DEM as in Source game engine = no Photoshop can't open these because they are game engine specific and really a type of video... the DEM is short for Demo in this case
I was referring to the DEM data map files which are a series of datapoints not actual image files. This is a dem of an area not to far from my house. Dropbox - 9031_75m.dem
Ussnorway can you walk through how you would open such a file. I am interested to know the solution. The file was generated by USGS.
you need to unpack that file first... the free tool maxwithdax posted will do this and the map part is what Photoshop can see
the other files are effectively metadata i.e, latitude and longitude, time of day etc
Except, when loading my TIF translated DEM file, it looks like this in Photoshop ?
If your intention is to convert to an actual 3d file for rendering, please refer to this answer:
Qgis will also convert any DEM file to TIFF.