This lens is the first of the Cosina manufactured versions, a fact that attracted scorn at the time but of course once the truly astonishing APO-Lanthar 125mm f/2.5 SL came along, possibly one of the greatest lenses ever made, nobody questioned Cosina again.
I love this lens, it's not the fastest but not too slow either, it performs beautifully from wide open and has fantastically smooth bokeh. There's just something about the way it renders that I love, it certainly seems to produce a subtle 3d effect a lot of the time.
The build quality is also excellent and the focus ring has just the right amount of damping. This lens can be had for relatively little money so I think it represents something of a bargain.
