05-06-2016, 10:21 AM
The lenses subject to the Pentax-Tokina collaboration were launched between 2004 and 2008 (without counting the re-made 100mm f/2.8 macro). AFAIK most were Pentax designs.
Pentax collaborated with Tamron in the past, even well before digital (and during the Pentax-Tokina collaboration). Of course, Pentax remains a reputed optical lens maker. They can, and do make lenses of their own.
One such example is the Pentax D FA* 70-200mm f/2.8, a very impressive design, with no less than 8 special glass elements.
Pentax collaborated with Tamron in the past, even well before digital (and during the Pentax-Tokina collaboration). Of course, Pentax remains a reputed optical lens maker. They can, and do make lenses of their own.
One such example is the Pentax D FA* 70-200mm f/2.8, a very impressive design, with no less than 8 special glass elements.