Tamron 28-75mm f/2.8 Di III VXD G2 - Review / Test Report
Lens Reviews - Sony Alpha (Full Format)

Review by Klaus Schroiff, published October 2022


Lately, Tamron had quite a run with lots of attractive new products as well as product updates, and a short while ago, they also released the Tamron 28-70mm f/2.8 Di III VXD G2. Despite being popular among consumers, we weren't overly impressed by their 28-75mm f/2.8 Di III RXD (aka G1) so let's hope that the G2 is more convincing. Tamron is listing 5 improvements over the "G1" version. Better image quality, better close focus performance, designed body, faster AF and user-customizable functions. Sounds good - on paper - so let's have a look.

Traditionally, most Tamron lenses had a somewhat plasticy feel to them, and this didn't really change with the G2 lens. However, the plastic quality seems to have improved somewhat, and the "sculpted" shape looks a bit more premium. Tamron lists the "shinier" finish as an advantage. The zoom and focus rings operate smoothly (and smoother compared to the G1). The G2 lens is moisture resistant, although it isn't clear whether it's also dust resistant. Just like most standard zoom lenses, the inner lens tube extends when zooming towards the long end of the zoom range. The Tamron lens no longer features a dedicated focus switch. Instead, they moved a customizable button - which can act as a focus switch if configured accordingly. This can be configured via a USB cable and Tamron's "Lens Utility" software. A petal-shaped lens hood is part of the package.

The G1 lens with its RXD (Rapid eXtra-silent stepping Drive) had a pretty fast AF already, and the G2 lens is even snappier thanks to its new VXD (Voice-coil eXtreme-torque linear Drive). Tamron claims a speed gain of a factor of 2 and we can see that. Manual focusing is very precise - probably also a benefit of moving from a stepping to a linear motor. An interesting aspect of the G2 lens is also the improved close-focus capability with a max magnification of 1:2.7 at 28mm and 1:4.1 at 75mm. This is quite remarkable for a standard zoom lens. An image stabilizer has not been implemented.

Optical construction17 elements in 15 groups inc. 2x aspherical and 2x LD elements
Number of aperture blades9 (rounded)
min. focus distance0.18m-0.38m (max magnification: 1:2.7 (WIDE) / 1:4.1 (TELE))
Filter size67mm
Hoodpetal-shaped (bayonet mount, supplied)
Other featuresFluorine coating, customizable button, moisture-resistant design
MountSony FE