>>3621078>they seemed too sharp and contrasty to be some homemade simple lens>It seems to be really sharp in the centre.All of them are like that. The aperture is where all the magic happens.
>Imagon fashionI've made a similar one for another lens entirely. I ended up settling with something a bit different. It takes that sink drain aperture and allows me to rotate it to close off the holes as needed (pic related).