Originally posted by boriscleto Why does everyone assume it is a DA* quality lens? It is listed as a DA on the roadmap and it is variable aperture.
DA* and variable aperture is not mutually exclusive. For reason mentioned up thread, a 135-380 F4 is going to be massive and cost a fortune. My guess it will be equivalent to the Nikon 80-400mm f4.5-f5.6 in perfomance and price. The Nikon is $2700 and Sony 70-400mm is around $2000. Canon is gearing up for a replacement of its 100-400 f4-5.6. That lens came out in 1998. I didn't realize how old it was until I saw Nat Geo photogs using it with film bodies in "Through the Lens".
Patent: Canon EF 70-400 f/4.5-5.6L IS
I highly doubt that any first party 300mm+ lens will be under 1k. There is a reason why sigma, tamron, and tokina have carved their niche. The unfortunate part is other than sigma's older designs, Pentax which has the greatest need for 300mm+ has the least choice to choose among them.