Check out photographer John Siskin‘s article on building your own multi-element, soft-focus lenses out of diopters. The article originally ran in View Camera Magazine and has heaps of example photos. You can download a PDF reprint of the article directly from Siskin.
Thanks to Katie Cooke for the heads-up!
Related: I ordered and received a copy of John Evans’ new ebook, Exploring Simple Lenses (blogged previously). I’m making my way through it, look for a review soon!
Oh awesomeness! Thanks for the heads up. Put in my todo soon pile :-D