Really? Both my A* 300/f2.8 and my FA* 250-600/f5.6 came with a set of drop-in filters (albeit different sizes for each lens) that included what appears to be a plain glass filter. I'm pretty sure it's recommended practice to have a piece of glass in the optical path there - why else would there be a filter blank included?
Sure, the lenses will focus just fine without anything there. But presumably the CA corrections, etc., assume a filter is present. On Mon, Apr 03, 2006 at 06:32:50AM -0700, Jack Davis wrote: > 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
