My copy only from my cold, dead hands! I am a bit exaggerating here.So crazy you mention this one ... EVERYONE that ever owned one seems to rave about it. Miracle lens ...
Together with its 600mm counterpart (Fuji 600mm f/11.5 Fujinon-C) has became a surprisingly expensive second-hand lens. Reason is because it covers 11X14".
I bought it because it's a small yet sharp, long focal length lens for 4x5". But I doubt it will shine on 645 type digital, wasn't designed for that level of performance.