Usually, this is how the rumor mill works: the rumor mill churns out some shreds of information about a highly coveted piece of photo equipment and the “hype-train” starts rolling. Not so with the newest rumors that Sigma Rumors has picked up. According to a source – which supplied the aforementioned rumor site in the past with information on the 24/1.4 Art and turned out to be extremely trustworthy – neither a 24-70mm f/2.8 OS Art nor a 70-200 f/2.8 OS Art will be released in the immediate future or medium-term. Instead, Sigma is said to be working on more prime lenses.
According to the same source, only one more “focal length” will be published until the end of this year. If this means another prime lens, then this rumor is colliding with another one which was published by Photo Rumors one week before: namely that Sigma is developing two 12-24mm lenses, an Art and a Contemporary version, at the same time. In what way these UWAs are going to differ from one another and whether their being allegedly in development is even true at all, is not clear yet. Neither is it clear how fast the lenses will be. In my opinion, the Art, like the Art-Zooms so far, will be faster and will have a constant aperture. As to the Contemporary, I think a variable aperture of f/4.5-5.6 is probable, since I believe that it will replace the current 12-24mm 4.5-5.6 II DG HSM.