The gossip factory is currently working overtime. We are talking about at least 8 new Sigma lenses that will be presented in the course of the next year. Anything ranging from a super fast 24-70mm f/2 standard zoom for full frame, to several high-priced and fast telephoto prime will be introduced. While all of these lenses (just look at the list linked above) indeed make sense when inspecting Sigma’s lens portfolio, the newest rumor about a 16-20mm f/2 for full frame causes amazement and question marks.
Based on the 18-35mm f/1.8, a 24-70mm f/2 is easily conceivable. Similar is the case with the 24mm f/1.4, 50mm f/1.4 Art, 135mm f/1.8 and the telephoto primes. All of these are lenses that Sigma currently doesn’t offer or lenses that should be revised for various reasons. The 16-20mm f/2 is an entirely different matter, here you have to look twice to really get the point of this lens. Due to the already available 18-35/1.8, it is of no interest to APS-C users. Moreover, the focal range is rather small. In my opinion, this lens only makes sense if Sigma plans on rendering several primes (16mm, 18mm, 20mm) obsolete, that are rare anyway in the wide-angle range, in terms of image quality, light gathering power and price. That is to say, the lens will need to have a near perfect optical performance to be competitive with diverse Walimex/Samyang 16/18mm f/2 or f/2.8 and Zeiss primes, as well as f/2.8 zooms with a bigger focal range. Among the zooms, I consider the Canon 16-35mm f/2.8, the Nikon 14-24mm f/2.8 and the Tokina 16-28mm f/2.8 as toughest competitors. Against the former two, Sigma will have to compete price-wise.
What do you think? Does a lens like that make sense?