I have both the K and M versions of the 3.5. I see very little difference in image quality between the two, especially at 5.6 and 8. The bokeh is a bit better on the K but for the size and weight difference, and the advantage of having the same filter size (49) as my 50's I usually prefer to carry the M. The flare resistance of the M seems a bit better than the K, probably the smaller front element.
BTW: I've found the M28/2.8 to be a better lens than I expected, given all the negative comments it's recieved, not as good as the 3.5 though. Don PS: JCO, I found another K300/4, so I don't hate you anymore! ;-) <<<<<Please note grin! > -----Original Message----- > From: J. C. O'Connell [mailto:[EMAIL PROTECTED] > Sent: Monday, May 30, 2005 11:08 AM > To: pentax-discuss@pdml.net > Subject: RE: SMC-M 28mm/3.5 > > > Are you sure you mean the "M" version? I thought the > one critically acclaimed was the 28mm F3.5 "K" > version, not the "M" version which is totally > different design.... > JCO > > -----Original Message----- > From: Don Sanderson [mailto:[EMAIL PROTECTED] > Sent: Monday, May 30, 2005 11:57 AM > To: pentax-discuss@pdml.net > Subject: RE: SMC-M 28mm/3.5 > > > One of my top 10 favorites. > It's the 28 I compare others to, it usually wins. > If you don't want it I'll be happy to take it! ;-) > > Don > > > -----Original Message----- > > From: Thibouille [mailto:[EMAIL PROTECTED] > > Sent: Monday, May 30, 2005 9:17 AM > > To: pentax-discuss@pdml.net > > Subject: SMC-M 28mm/3.5 > > > > > > Any experience with this lens? > > What can I expect from it ? > > > > ---------------------- > > Thibouille > > ---------------------- > > Z1,SuperA,KX,MX,P30t and KR-10x ... > > >