Upload & Sell: Off
Partly tongue in cheek, I like that Sigma are doing a good job of late.
But think - who are they aiming this one at, when half the enthusiasts either like m4/3 or look forward to an FF NEX? And the rest have the full Nikon or Canon lines to choose from.
And a monster moderate wide angle 2:1 (27-50mm ef fl) lens at this time on APS-C, with 72mm filters, weighing 810 grams, not much less than a full size FF DSLR body.
A dollar a gram! No, not in this lifetime.