Quoted By:
I bought a lens cap/body cap set, cut some holes in them, and epoxied them to a metal tube. This is what a Nikkor nifty 50mm 1.4/f does with a 171mm extension tube. This is about 3.1:1 magnification ratio. That is a Micro-B USB plug. This is a 4-photo focus stack. I did it handheld so I bumped up the ISO.
It cost like $1.10 to make.