I recently stumbled upon an old kilfitt 150mm lens that belonged to one of my grandparents. It has a 39mm thread for the mount and also has a reflex housing. I don't know what it was used with because there is no camera that matches the 39mm mount. I'm wondering if anyone knows if it's possible to use a lens like this on a canon 30d, if there is an available 39mm to eos mount adaptor? It would be a nice lens, but one of the aperture blades is out of alignment. Is it possible to get that sort of thing fixed, or is this a lens that is just going to sit on my shelf forever? any insights would be appreciated. thanks.