Originally posted by zoolander So what you're saying is that when Tokina made the 10-17, 12-24, 16-50, 50-135, they made them at Tokina. So Pentax set up its own plant to make virtually the same lenses 10-17, 12-24, 16-50, 50-135 ........
Yeah building two production lines, that makes complete fiscal sense !
Let me guess, the new Pentax 24-70mm 2.8 WR is made at Pentax too.
For a company that continues to outsource lens manufacture, Pentaxians continue to fantasize ...........apparently.
You do understand the difference between licensing an optical formula and rebadging an existing lens? The Pentax 24-70 and 18-270 lenses are rebadges made by Tamron. They may have tweaks introduced by Pentax -- different coatings in particular -- but the basic underlying lens is made by Tamron and is exactly the same as the versions made for other mounts, just with a different skin.
On the other hand, when Tokina licensed an optical formula from Pentax, they did make the lenses themselves and paid a small amount to Pentax per lens made and vice versa when Pentax would make a DA 12-24, they paid Tokina a fee for using their lens design. The 16-50 and 50-135 lens designs are completely different, in particular, as the Tokina versions are screw drive only, while the Pentax versions have both SDM and screw drive.
Anyway, as far as I can ascertain, Pentax owns the patents on the 16-50, 50-135, 10-17, and 35 macro, while Tokina owns the patent on the 12-24. In their glory years, Pentax wouldn't have licensed these designs to another company, but with how rocky things got financially before the Hoya acquisition, they were scraping for money anywhere to shore up their transition to digital.