Yeah its too bad they don't pass through the AF stuff, you would think they would redo them, keep the same optics to keep the development costs down but just add the pass through for the AF.
Well for now I'll look into getting the AF adaptor 1.7 because I'm used to that and it will give me some autofocus. I wish they weren't so hard to find and expensive, but what can you do. --- Rob Studdert <[EMAIL PROTECTED]> wrote: > On 4 Jul 2004 at 21:25, Verge Scott wrote: > > > Actually from the testing I have read good 1.4 > > teleconverters can actually be very good and > almost > > indistinguishable at times. If used with a high > > quality prime lens also. > > Quite correct, 30 years ago this wasn't the case, > now a lot of the Prime/TC > combos even wide open deliver near the resolution of > the best colour films. > > > I just wasn't sure about the pentax ones cause > I've > > only read about some nikon and canon and the > > kenko/tamron ones. > > I had a Kenko 7 element AF (pass-though) TC for a > short while, up against the > current Pentax TC it really delivered poor contrast > (regardless of the lenses > taking aperture), I suspect the Pentax AR coatings > help a great deal. > > > So has anyone seen any tests of the pentax ones? > > Yes but not in conjunction with the lens you intend > to use. It's hard to go > wrong with the 1.4X-S and the 2X-S TC they are > pretty good and contrary to some > reports the 1.7AF TC is a very good performer also. > I've sold my nX-S TCs but I > retained the 1.7AF and the two nX-L TCs, I'm pretty > pleased with them. Really > their biggest downfall is that they don't support > the AF function on AF lenses. > > Cheers, > > > 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!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail
