There are lots of web-cameras on the market, but I was able to find a bunch of Hue webcams on clearance, and I grabbed a bunch.
The camera has a manual-focus ring, and I tried dialing it all the way out (for closest focus). I found that I could get it into a "super-macro" distance (within 1/2 cm of the item). Here is an example of my F1-Help key on my keyboard.
The application is that the lens of the web camera could be mounted into a telescope or microscope to capture the images for those optics.
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