3D print a 164mm f/2.5 lens
Felix Steele designed a 3D-printable 164mm, f/2.5 lens that costs $13 to make. It's the first thing out of his new website, Pixels and Prisms, with more to come. [via PetaPixel, which posted some tests]
— Read the restAnyone can assemble the Pixels and Prisms lens.