Remember the little oval silver stickers? I bought a few Nikon lenses from someone named Chen in Hong Kong that lacked those "passed" stickers, and both lenses were disappointing. Don't know if that was the reason, but I sure paid a lot less. The name "Nikon" was covered with a black coating of something.
Jeffery On Oct 16, 2010, at 8:55 PM, J.C. O'Connell wrote: > Pentax also had a costly quality control. > Lenses were tested in Japan then sent to > Usa where they were tested again before > being sold here in USA. Its no wonder the lenses > were of high quality, no duds ever got > sold, they were rejected by QC dept. > > I doubt Pentax still tests every lens twice. > > -- > J.C. O'Connell (mailto:hifis...@gate.net) > Join the CD PLAYER & DISC Discussions : > http://tech.groups.yahoo.com/group/cdplayers/ > http://launch.groups.yahoo.com/group/cdsound/ > > > -----Original Message----- > From: pdml-boun...@pdml.net [mailto:pdml-boun...@pdml.net] On Behalf Of > Jeffery Smith > Sent: Saturday, October 16, 2010 9:43 PM > To: Pentax-Discuss Mail List > Subject: Re: Tamron 28-75 f/2.8 > > > 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:hifis...@gate.net) >> Join the CD PLAYER & DISC Discussions : >> http://tech.groups.yahoo.com/group/cdplayers/ >> http://launch.groups.yahoo.com/group/cdsound/ >> >> >> -----Original Message----- >> From: pdml-boun...@pdml.net [mailto:pdml-boun...@pdml.net] 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 - charl...@visi.com >>> Minneapolis, MN >>> http://charles.robinsontwins.org >>> http://www.facebook.com/charles.robinson >>> >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> PDML@pdml.net >>> 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 >> PDML@pdml.net >> 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 >> PDML@pdml.net >> 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 > PDML@pdml.net > 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 > PDML@pdml.net > 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 PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
