Originally posted by rparmar I don't get it. The DA12-24 is a perfectly capable, even exemplary, lens. Are you holding out for one more millimetre? I am sceptical any lens from Tokina could match it on IQ.
For when things really need to be wide, consider the Samyang 8mm. It implements the stereographic projection so there is much less deformation than with a standard fish-eye.
We have different interests, of course, but there certainly is more to distinguish the 12-24 from the 11-16 than focal length - a full stop. Not a big deal for landscapes, perhaps, but could be critical for me indoors (think: church/museum interiors).
IQ, of course, is not important if you didn't get the shot in the first place.