most "normal" ( non-macro ) lenses are optimized for a single focus distance, or in the case of IF lenses, a range of distances. By adding a ext. tube and going closer than designed you will usually degrade the image compared to what it was designed for. JCO
> -----Original Message----- > From: Sylwester Pietrzyk [mailto:[EMAIL PROTECTED] > Sent: Monday, March 03, 2003 7:07 AM > To: [EMAIL PROTECTED] > Subject: Re: New toy > > > on 03.03.03 12:58, J. C. O'Connell at [EMAIL PROTECTED] wrote: > > > a telephoto with a TC is never going to match > > a dedicated macro lens for closeup quality, let alone > > a superb macro such as the pentax 200/4. Dont kid > > yourself... > Did I asy, that it will match 200/4 in temrs of picture quality? > No. And if > you don't like results with 1.4 TC, you can always attach extension tubes, > that won't degrade picture quality... > > -- > Best Regards > Sylwek > > >
