Not exactly side by side, but I did own the Tamron lens, which was the same without the SMC and electronics. It was a good lens, but I found the performance of the Pentax PZ to be a bit better, more contrast and better color. That may have been due to the SMC coatings, but overall, I was happier with the old PZ version. however, the Tamron is a very nice and compact lens, as well as quite light when compared to the Pentax PZ lens.
----- Original Message ----- From: "Ayash Kanto Mukherjee" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, January 28, 2002 12:23 AM Subject: Re: FA 28-105 mm f/4-5.6 > 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 . - 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 .
