How to include an orthophoto or a raster file as legend XML?
There are two ways to include a raster or orthophoto into a legend (...media\customization\leg)
A) Directly as XML configuration (recommended).
B) XML configuration with inclusion of a LYR file.
A) Raster legend entry as XML configuration:
B) Lyrfilelegendentry as XML configuration:
1. load orthophoto in ArcMap table of contents.
2. right click on orthophoto > save as layer file
3. XML configuration of the legend XML