I just checked my 28/1.9K and confirmed what Shel reported: the change in focusing effort is normal. I think Steve Larson called it a clutch. Perhaps it is related to the floating elements, even though, as you point out, no such two-stage effort is found in the floating-element 28/2K.
If you're interested, I have an Adorama-brand black metal circular threaded 58mm wide-angle hood that I bought for this lens. It measures 93mm (3.7 inches) in diameter by 22mm (0.8 in.) deep. $8 shipped. (I now have an original Vivitar hood.) Paul Franklin Stregevsky - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
