Originally posted by Serkevan Thet probaby *could*, but wide angles for DSLRs are complicated - it would either have to be optically terrible or it wouldn't be particularly cheaper than the DA 15, methinks.
I think it would also be competing, not just with the 15mm Limited, but with the 16-85...
If I'm on a budget and want a lens upgrade from my 18-55, that's probably where I'll go first, as I get both ends and an optical upgrade.
But I think the problem really is that trade between cost (number and type of elements) and quality. If it were easy to do, one of the more creative third-party manufacturers would have done it already, even though they would likely have botched it.
"New 14mm f4.0 with all the distortion you remember from those cheap wide-angle adapters, with a beautiful wood and bronze barrel, only $1,495 in Nikon F, Canon EF, and maybe Pentak, if enough people sign up on our Kickstarter... $2,495 in Leica mount because Leica..."
That said, I wish they would do more 'plastic fantastics'. That 14mm f4 would work nicely with, say, a 24mm and 135mm joining the 35mm and 50mm... then you're only missing an 18mm to round out the old-school field of view in APS-C. And if a couple of those happen to cover full frame, even mostly, even better...
-Eric