I have the 40 mm, f/2 'pancake' from Voigtlander. About CDN $500. It is manual focus only but easy enough to use with the centre point to help find the focus, using the normal screen. It compares very well -- better results in fact -- with my 24-105 at the 40 mm focal length. If I did not have the VC lens I would be very tempted by this new lens.