At 02:38 PM 25/02/2008, William Robb wrote: >----- Original Message ----- >From: "Bob Sullivan" >Subject: K20D & back focus > > > > Reading the promo literature on the K20D, I noticed a new feature. > > The camera has the ability to store adjustments for backfocus (or > > forward) for 20 lenses. > > The claim is that all the DA lenses are fine, but others may need > adjusting. > > > > Any ideas on why this might be? > > Do some lenses transmit more of the right wavelength light for focusing? > > I am puzzled as to the physics/mechanics of this. > >I'm still trying to decide which lenses I won't be calibrating >because there are only 20 >presets.
...sorry what's that..."You can never have too many lenses"?!? :-D Cheers, Dave -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
