Venus Upon the Sun

Apparently, all knowledge is stored at Wolfram Alpha. (Via John August.)

Auto Focus lenses to think about: will these do autofocus on a Panasonic four thirds camera with an adapter?
Canon EF 35mm f/1.4L USM (about $1300 -- the cheaper and slower version is the Canon EF 35/2)

Canon EF 85mm f1.2L USM Mark II (about $2000 -- the cheaper and slower version is the EF 85/1.8 USM)

Here is a list of lens adapters for four thirds cameras.