"Pål Jensen" <[EMAIL PROTECTED]> wrote:
> Could it be that these rebadget lenses are actually original
Pentax designs? It would not surprise me the least. Pentax have
among the largest R&D dept out there; they license and sell designs
to other manufacturers. Since Pentax is first and foremost an
optical company, its very likely that many lenses on the market are
designs bought from Pentax. If you read Canon's patents on IS
lenses, both the zooms and the telephoto lenses, you'll see that
their optical design fully refer to Asahi patents.
> Frankly, I think its more likely that eg. the 28-200 Tamron is
designed by Pentax and bought by Tamron, than the other way around.
That is possible. But what does it mean in practical terms? Is
there a real advantage to buying Pentax 28-200 over Tamron 28-200?
As long as the lenses share optical design and construction quality
and both have multicoating of some sort. One may argue that Pentax
branded lens may hold its value better on the resale market, but
these are lenses of bargain construction and not likely to survive
long enough to really matter.
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