The Tamron 70-180mm f2.Eight Di III VXD (mannequin A056) is a telephoto zoom designed for Sony’s Alpha mirrorless cameras and corrected for full-frame sensors. Introduced in April 2020, it enhances Tamron’s different zoom lenses for E-mount with a quick f2.Eight focal ratio: the 17-28mm f2.Eight Di III RXD and the 28-75mm f2.Eight Di III RXD.
Bodily, the 70-180mm f2.Eight Di III shares the identical small 67mm filter thread with the shorter zooms and it’s only 81mm (3.2in.) diameter vast and 149mm (5.9in.) lengthy – however extends when zoomed to 180mm focal size. It weighs solely 810g (29 oz.) and might go all the way down to a most magnification of 1:2 with guide focus at 70mm focal size. Curiously the lens has no optical stabilization however depends solely on the picture stabilization supplied by the Sony Alpha mirrorless cameras.
The Tamron 70-180mm f2.Eight Di III is listed at 1499 EUR (incl. 19% VAT) / 1199 USD / 1349 GBP and may change into accessible in mid Might. Forward of my full evaluation I’ve in contrast the brand new lens to the Sony FE 70-200mm f2.Eight G Grasp OSS primarily based on the data up to now accessible from Tamron. PS – should you’re within the different two f2.Eight zooms for E-mount in Tamron’s line-up try my in-depth critiques: Tamron 17-28mm f2.Eight Di III evaluation, Tamron 28-75mm f2.Eight Di III evaluation. Or take a look at my Sony FE 70-200mm f2.Eight G Grasp OSS evaluation-so-far with plenty of pattern photographs.
Info from the catalog
Let’s evaluate the Tamron 70-180mm f2.Eight Di III to the Sony FE 70-200mm f2.Eight G Grasp (“Sony” for brief). As normal I’ve rated the options with a [+] (or [++]), when it’s higher than common and even cutting-edge, a  if it’s normal or simply common, and [-] if there’s an obstacle.
Measurement (diameter x size): At 81 x 149mm (3.2 x 5.9in.) with out lens hood the brand new Tamron is far smaller than the Sony at 88 x 200mm (3.5 x 7.9in). However zooming the Tamron to 180mm focal size extends the lens whereas the Sony doesn’t change its size throughout zooming. [+]
Weight: 810g (29 oz.) with out tripod foot or lens hood. That’s solely 55% of Sony’s 1480g (52oz.). [+]
Optics: The Tamron 70-180mm f2.Eight Di III has 19 parts in 14 teams together with 6 particular dispersion parts and three aspherical parts. This can be a barely easier design than the Sony with 23 parts in 18 teams. Each lenses have fluorine-coating on the entrance factor to repel water, mud, and dust and make cleansing simpler. [+]
Closest focus distance is 0.27m (0.9ft.) at 70mm focal size and 0.85m (2.8ft.) at 180mm focal size. An excellent most magnification of 1:2 is achieved at 70mm focal size. At 180mm focal size most magnification remains to be a really helpful 1:4.6 which ought to lead to a working distance of round 0.65m. The Sony achieves a most magnification of 1:Four at 0.96m minimal object distance. [+]
Filter-thread: 67mm, the Sony takes 77mm filters. [+]
Picture stabilization: The Tamron doe not supply optical stabilization. The lens solely depends on the physique primarily based picture stabilization of the Sony Alpha mirrorless cameras. The Sony zoom lens has optical picture stabilization constructed through which works along with the body-based picture stabilization of a Sony Alpha physique. 
Auto focus: Sure with built-in AF drive. Guide-focus override is by merely turning the devoted focus ring. The main focus ring most likely has a variable gearing (like Tamron’s shorter f2.Eight zooms for E-mount) which permits for very exact guide focus when turned slowly however can’t be switched to linear gearing. Which makes clean focus pulling for videographers virtually inconceivable. [+]
Covers full body/FX or smaller. Similar with the Sony. [+]
Worth: 1499 EUR (incl. 19% VAT) / 1349 GBP / 1199 USD. This appears to be like like a fairly excessive value for a lens with out optical stabilization and solely 180mm most focal size. However the Sony goes for 2700 EUR / 2150 GBP / 2600 USD. 
The Tamron comes and not using a pouch however the lens hood is included and reversible for transport. The Sony has a a lot nicer padded lens case. 
Aperture ring and different management parts: The Tamron has no aperture ring however presents a zoom-lock to stop the zoom from extending when within the 70mm place. The Sony additionally has no aperture ring however presents a spotlight maintain button, a spotlight limiter swap (full/3m) plus switches to manage picture stabilization and AF/MF. 
Sealing: sure, a rubber grommet on the lens-mount plus additional particular weather-sealing all through the development, similar to the Sony. [+]
The rating within the “features-department” is 0[-]/4/8[+] which makes the brand new Tamron 70-180mm f2.Eight Di III appear like a properly rounded design. Its distinguished options are its small dimension and weight plus the utmost magnification of 1:2.
Three Tamron f2.Eight zoom lenses for E-mount
Let’s see what the MTF charts inform us in regards to the anticipated efficiency of the brand new lens.
Above: Tamron 70-180mm f2.Eight Di III at 70mm f2.8 (left), 180mm f2.8 (proper)
Above: Sony 70-200mm f2.Eight GM at 70mm f2.8 (left), 200mm f2.8 (proper)
From the charts the brand new Tamron 70-180mm f2.Eight Di III ought to present higher decision than the Sony FE 70-200mm f2.Eight G Grasp on the brief finish. On the lengthy finish the brand new Tamron additionally reveals excellent decision – however solely within the sagittal path. The meridional distinction drops sooner in the direction of the corners on account of astigmatism – however with decision nonetheless at a degree much like the Sony. All-in-all this appears to be like very promising for Tamron’s new 70-180mm f2.Eight Di III and I’m trying ahead to how the lens compares in actual life.
That’s it for now, however examine again for my full evaluation of Tamron’s 70-180mm f2.Eight Di III when the lens turns into accessible!
Examine costs on the Tamron 70-180mm f2.Eight Di III VXD at B&H, Adorama or WEX. Alternatively get your self a duplicate of my In Digital camera ebook or deal with me to a espresso! Thanks!