Sean posted a link to an article about a f/1.0 lens the other day. Here is one about a lens that is not so much fast, but a little wider than most:
in German:
http://www.heise.de/foto/meldung/Die-Linse-die-nach-hinten-schaut-1557410.html
read in Google translate:
http://translate.google.com/translat...t-1557410.html
Edit: Just googled it and saw that Bryan had already posted this months ago:
http://www.the-digital-picture.com/N...aspx?News=2295