I have started a resource page of 50mm lenses for 35mm and Micro Four Thirds cameras as these lenses are likely to be considered as portrait lenses on cropped sensor digital cameras and many might find it useful to have a list of lenses with some links.
Feel free to add your comments to this post here – but spammers forget posting comments on my website – I have a super intelligent spam processing system which will delete spam type comments that do not contribute to other readers.
The page on 50mm lenses is here.
Hope it is useful to some of you.
By the way, the term “fast” in this context refers to wide aperture lenses – and I have restricted it to lenses f/2.0 or wider aperture.