Some videos of us playing with a large fresnel salvaged from a projection TV. This is about a 1m^2 lens, with very fine lines. The lens is kind of dirty and we were positioning it by hand (not ideal), but the results are still impressive …
Some videos of us playing with a large fresnel salvaged from a projection TV. This is about a 1m^2 lens, with very fine lines. The lens is kind of dirty and we were positioning it by hand (not ideal), but the results are still impressive …