Both the 300/2.8 and the 600/4 take rear filters. I've seen that it is a requirement for a filter blank to be in place for the optics to work properly with other lenses (the Tamron 300/2.8 for example) so assumed that it could be the case with those. > > From: Jack Davis <[EMAIL PROTECTED]> > Date: 2006/04/03 Mon PM 01:32:50 GMT > To: [email protected] > Subject: Re: Re: D'oh > > Nor my A*300 f/2.8. > > J > > --- Rob Studdert <[EMAIL PROTECTED]> wrote: > > > On 3 Apr 2006 at 6:57, mike wilson wrote: > > > > > One or two lenses (300/2.8?) require a filter "blank" (filters at > > the back of the lens) to focus properly in the first place. > > > > Not in the A*300/2.8 or any other of the long "recent" Pentax lenses > > that I'm > > aware of. > > > > > > Rob Studdert > > HURSTVILLE AUSTRALIA > > Tel +61-2-9554-4110 > > UTC(GMT) +10 Hours > > [EMAIL PROTECTED] > > http://members.ozemail.com.au/~distudio/publications/ > > Pentax user since 1986, PDMLer since 1998 > > > > > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > >
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