SR with manual lenses?

[CyberCoyote]

With the screw mount 135 I've got the K100D can't tell the mm of the lens thus it will not activate SR. Is there a way in the menu to tell it what size lens to compensate for in order to activate it? There's a Shake Reduction feature on the menu but it's greyed out (and my manual is at work )

Edited: Played around with the settings, not sure what I did bt now it recognizes the manual lens and asks for the focal length What an absolutely awesome camera, every day there's a new edification for going with Pentax over Brand NC