Summary: Despite being warned on this message board about the device not displaying certain jpeg format pictures
that were generated by other tools such as Adobe Photoshop, I decided to go ahead and purchase it anyway.
Sadly, the warnings were confirmed. Some of the pictures that I wanted to display were from more than 20 years ago which obviously were scanned and processed using Photoshop on my Mac. The jpegs were not displayable on the DPF.
The Web was not of much help.