gregoryfo wrote:
Is there a reason they can't make this lens autofocus? It seems like such a fine lens optically and so inexpensive. I would gladly pay 2x the current price for an AF lens.
Because the companies frequently have to reverse engineer the AF algorithms of these companies. The R&D in getting AF to function correctly would probably jack the price to much further than 2x its price. Moreover, it's not a guarantee that the camera will function that well, as is the case with many Sigma, Tamron and Tokina lenses.
Also, I bet there are more than enough people on the Alt board that really like the feel of an MF lens and wouldn't want the lens to be AF, especially if it moves the price up by a factor of 2.