I don't doubt that. I just never saw it touted publically until Vivitar ads. The mindset in the early 1970's was that, if a computer did it, it has to be right. I didn't believe that when a computer had Rocky Marciano knocking out Muhammad Ali.
Jeffery On Oct 16, 2010, at 8:38 PM, J.C. O'Connell wrote: > FWIW - Pentax was using computers to help optical design > as early as the 1960's. Read it in one of their old > brochures. > > -- > J.C. O'Connell (mailto:[email protected]) > Join the CD PLAYER & DISC Discussions : > http://tech.groups.yahoo.com/group/cdplayers/ > http://launch.groups.yahoo.com/group/cdsound/ > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On Behalf Of > Jeffery Smith > Sent: Saturday, October 16, 2010 8:48 PM > To: Pentax-Discuss Mail List > Subject: Re: Tamron 28-75 f/2.8 > > > And I should have mentioned "nice contrast" in the raw files I looked at > earlier. The biggest problem with zoom lenses when they first appeared > decades ago was poor contrast due to all of the elements and glass/air > surfaces. I think that the better lens coatings have helped this. > > Are any of you old enough to remember the Vivitar ads that touted that their > lenses were "DESIGNED USING A COMPUTER. > > Jeffery > > On Oct 16, 2010, at 7:41 PM, Charles Robinson wrote: > >> On Oct 16, 2010, at 19:18, Jeffery Smith wrote: >> >>> I had a chance to use this lens for the first time today. The >>> conditions were not good (high noon, blinding sunlight, not a cloud >>> in the sky, low humidity). It sure is easier to carry around compared >>> to the tank-like Tokina 28-75 f/2.8. I'll try to post something >>> tomorrow (something shot in the shade). >>> >>> Do any of you have this lens? If so, what are your impressions? >>> >> >> This was my favorite go-to lens for most general photography until I >> got the Pentax 16-50 and it sat unused... I liked it a lot, but >> always wished it went WIDER. >> >> Manual focus on it was a little tricky.. not a lot of "throw" between >> one end and the other, but that and the not-wide-enough were my only >> complaints. Nice color, good out-of-focus renditioning, etc... >> >> -Charles >> >> -- >> Charles Robinson - [email protected] >> Minneapolis, MN >> http://charles.robinsontwins.org >> http://www.facebook.com/charles.robinson >> >> >> -- >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
