Thanks for the info. Out of all the lenses in the list that is faster than 1.2, only the Canon 50mm 1.0L is for DSLR, the rest are for range finder. The canon 1.0 has been discontinued for the reason stated in the article. the article re-enforce about the difficulty of making a fast 50mm DSLR lnes. Even Nikon made the 1.2 SLR lens in 58mm, not 50mm.
For what its worth, there are a few fast m43 lenses. Eg the Voigtlander 25mm/0.95 and the Noktor 50mm/0.95. These are both comparatively small. The Noktor is also quite affordable.
Thanks for for head up. However, I cannot find any information on the two 0.95 lenses that you have mentioned in the official importer's site (Camera Quest). Even they exist, they arefor range finder, not FF DSLR. Also I am not aware of any really fast M43 lens either. Please supply more information. Thanks