i use the raynox relay lens with the Mitutoyo Metallurgic objectives..
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Bob, you were the one that showed me stuff like that before. Here on Nikongear. I was always impressed by your work.
Very good that this more esoteric way of shooting is now being popularized with the help of a museum.
Everybody should understand at one point that humans are only one size and duration of life forms and that humans are essentially dependent on other life forms that live much longer, much shorter, are much larger or much small than us. See Birna's work on aquatic life forms like duck weed for the environmental administration of Norway e.g..
I guess these pictures help!