This forum certainly has an over-representation of landscape/nature/hobbyist/don't-want-to-have-heavy-stuff photographers, which often makes it hard to get a true sense of a lens' desirability/utility on the larger market and in other genres of the craft (not that forum comments aren't ever a good measure of that ). The trend as of late has somehow been that f/2.8 is an unnecessary luxury. For the aforementioned crowd, sure, but it really is further form the truth for a large majority of professionals. There are significantly more wedding/event/concert photographers making a living with their camera than landscape photographers or photographers who want to cut 400g from their bag. They also aren't using filters so the bulbous front element is irrelevant. Most those guys have kept their Canon 16-35 f/2.8 in response to the Canon f/4 IS, but they finally have another option, and Tamron really delivered it with this one. It's just a shame Tamron doesn't have the same reputation as the new Sigma Art line. If this was a Sigma Art 15-30 f/2.8 OS I would bet money it would be THE lens you'd see at every wedding reception.