<<Entirely different optical designs, very different size and weight, very different user interface when using in macro focusing mode. The later zoom 'close focuss' at all focal lengths. The later 'macro focuss' only at it's shortest focal length, and then you push a button turn the focus ring to macro and from then focus by 'zooming'.>>
Oops, didn't know about that :) Well, I kinda knew that a smaller front element meant changes in the optical design, but I was talking about the resulting pictures rather than the lenses themselves. Could you explain the difference between "close focusing" and "macro focusing"? Also, from what i've heard only the first version of this lens had this white button, but I may be mistaken. regards, Lukasz - 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 .
