Tamron is working on a 28-75mm F2.8 lens for full-frame Sony mirrorless cameras: Digital Photography Review

Details are thin at this point, but the 28-75mm F2.8 Di III RXD will offer "superb optical performance" and a moisture-resistant construction.
Details are thin at this point, but the 28-75mm F2.8 Di III RXD will offer superb optical performance and a moisture-resistant construction.

DPReview TV: Tamron 28-75mm F2.8 G2 review: Digital Photography Review

Tamron 28-75mm F/2.8 Di III VXD G2 Lens Review

Tamron 28-75mm F2.8 Di III VXD G2 Review

Tamron 28-75mm f/2.8 Di III VXD G2 Lens Review

Tamron 28-75mm f2.8 Di III G2 review

Detailed Review of the Tamron 28-200mm f/2.8-5.6 Di III RXD Full-Frame E-Mount Lens

Tamron 28-75 F2.8 + Sony A6100

Review: Tamron 28-75mm f2.8 Di III RXD (Sony FE)

Superb optical performance, including both outstanding image quality and beautiful background blur effects (bokeh), provided by fast F/2.8 aperture. Comfortably light weight (19.4 oz.) and compact (4.6 in). Close-focusing; Minimum Object Distance: 7.5 in at wide-angle setting and 15.3 in at the telephoto position. All-new RXD stepping motor AF unit is extremely quiet and therefore perfect for video capture.

Tamron - 28-75mm f/2.8 di III VXD G2 Lens for Sony E Mount