Originally posted by Pål Jensen I'm not aware of any outsourcing to Tamron. Pentax have sold one rebadged Tamron lens. So have Nikon. This lens was a cheap wide zoom range kit lens that only volume could make cheap enough.
I have no idea about Pentax lens R&D capacity. Nor have anyone else on this forum....
For sure we don't know the facts in Pentax, but here are the facts from lens design industry (and believe me, I know exactly what I am talking about) :
>designing a lens takes from 1 to 3 years depending on complexity, without taking into account further production issues
>a lens design software licence is at least 30-40 thousand euros a year
>a big optical design team is about 10 designers (see my earlier post about a german company)
So saying that Pentax can produce 'only' 3-4 lenses per year is realistic