Sigmatel 135/1.8 anyone?

[sultanofswing]

Has anybody used the Sigmatel Sigma 135/1.8 ?
There's someone in my area selling one in Nikon mount for £200.
I already have the Nikon 135/f2 DC lens, is the 1.8 Sigmatel worth the addition?

 

[Andysnap]

Sigmatel were made by Sigma and used the short-lived Y/S interchangeable mount. From what I can find out it is a little soft wide open and can have a slight green cast but knock it down a bit and it sharpens up nicely and has a lovely creamy bokeh. A pretty rare lens I think and £200 may be about the right price.

A few sample pics here, looks good.

http://forum.mflenses.com/viewtopic,p,89713.html#89713

Andy