Tamron announced the development of the new Tamron 17-28mm f/2.8 Di III RXD lens. There is no pricing info yet but the lens is expected to ship in mid 2019.
Preorders (not yet available):
Tamron 17-28mm at BHphoto.
Introduction at Explora.
High-speed ultra wide-angle zoom lens for Sony E-mount cameras is extremely compact and lightweight
17-28mm F/2.8 Di III RXD (Model A046) –
The Model A046 achieves an astonishingly small diameter for a high-speed ultra wide-angle zoom lens, as witnessed by its modest 67mm filter size. Its unprecedented light weight and compact size provide excellent balance when used with a full-frame mirrorless camera, making it easy to carry, and enabling it to cater to a wide range of scenes and shooting conditions. The Model A046 offers a fast F/2.8 aperture throughout the entire zoom range, and delivers high-resolution and contrast edge to edge. The combination of ultra wide-angle focal length, fast constant F/2.8 aperture and an MOD (Minimum Object Distance) of 0.19m (7.5 in) at the wide-angle end encourages richly expressive and creative photography in a multitude of scenarios. The Model A046’s AF drive system is powered by the RXD (Rapid eXtra-silent stepping Drive) stepping motor unit, enabling it to deliver high-speed, high-precision and superbly quiet operation suitable for shooting video as well as still photographs. Sonyalpharumors
*Specifications, appearance, functionality, etc. of the above-mentioned three products are subject to change without prior notice.