Hallo John! Thanks for your views. I still have a small question, if you don't mind. The one with IF has 15 elements in 12 groups while the one with power zoom has 13 elements with 11 groups. Don't you think that the IF one could have closer optical performance to its power zoom counterpart if not equal? Have you compared the two lenses side by side? Just inquisitive. I apologise beforehand if I am disturbing you.
With regards, Ayash. On Sun, 27 Jan 2002, John Glover wrote: > No question, the old power zoom is a much better lens. > One of the best in its class. > > > ----- Original Message ----- > From: "Ayash Kanto Mukherjee" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Sunday, January 27, 2002 10:15 PM > Subject: FA 28-105 mm f/4-5.6 > > > > Hallo all! > > > > According to Boz's K-mount page, PENTAX produces two FA lenses in the > > range 28-105mm f/4-5.6 > > > > One has power zoom option and the other one has IF (Internal Focussing). > > Boz has also stated that the one with IF is possibly fabricated by Tamron > > wth genuine PENTAX electroncs and SMC coating. > > > > How does the optical performance of the one with IF compares with the one > > with Power Zoom? > > > > Inquisitive. > > - Ayash. > > - > > This message is from the Pentax-Discuss Mail List. To unsubscribe, > > go to http://www.pdml.net and follow the directions. Don't forget to > > visit the Pentax Users' Gallery at http://pug.komkon.org . > - > This message is from the Pentax-Discuss Mail List. To unsubscribe, > go to http://www.pdml.net and follow the directions. Don't forget to > visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
