Originally Posted by Gooshin
i would gladly pay 800 dollars for such a lens
I would too. I've even pondered switching to Nikon ever since they came out with their 16-85mm. It's not a constant f/4 unfortunately, but from the reviews I've read it is wonderful lens.
To me size does matter though. As much as I'd like an f/2.8 16-90 (is that even physically possible?), I'm sure the size of such a lens would turn me off. I have no desire to lug a glass and metal brick around everywhere I go. That's why something lightweight like that Sigma with a lightweight prime or two stuffed in my pocket will suffice for me until my dream lens is made.