MacDonald was a fairly accomplished amateur photographer. As a result of looking at some 30,000 photos and slides in the Collection I can say that although many of the “record” shots taken on various trips, both here and abroad, are not memorable--most of us have taken that type-- he did spend more time on nature shots, especially around Piseco Lake. And the results were quite good, I think. Bear in mind that these are scans of slides taken 20 to 50 years ago.
This is the only shot I found of JDM with his camera, probably taken by Dorothy MacDonald.