Originally posted by clackers Why help your competitors?
You may say that Sigma and Tamron are co-habitants of an ecosystem for the buyer.
But another way of saying that, is they are rivals.
yeah, but this is obviously less better for us consumers
Why in hell should someone from serious company think by that ? It's not very wise thinking to make consumers of your techniq inferior .. In any way .
Sigma is very strong in producing good glasses, and Pentax is rely on that, and of course Tamron and others manufacturers which deliver lens with Pentax mount, and spread the offer and usability of our Pentax Cameras.
So,
I really don't think this is the case here, maybe is just Pentax lazyness, or perhaps, as the coleague uphere said before, Sigma don't have proper hardwer