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Last Updated on: Thursday, November 30, 2017 07:44 AM

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Cheap Close-up Camera Lens
designed by David Johnson, P.E.

I often use my digital camera to take photos of some electronic projects. At times, I need to get in close to capture some details. But, without some additional optics, my camera just could not maintain focus, as I received closer to an object. Being a cheap person, I didn’t want to spend money on an expensive close-up lens.
Instead, I found a 1.75” glass lens with a focal length of about 2.5 inches. I glued the lens to a cardboard tube. This allowed the assembly to slide over the extended cylindrical lens of my camera, holding the glass lens over the camera lens. Thicker glass lenses could be used for higher magnification but this one allowed me to zoom in pretty close. The PC board below is a 1GB memory stick IC with 0.025” pin spacing

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