Sony’s FE 16-35mm f2.8 G Master is an ultra-wide zoom for its e-mount mirrorless cameras, and corrected for use on full-frame bodies. Announced in May 2017, it completed a ‘trinity’ of Sony’s G Master lenses with f2.8 focal ratios, joining the earlier FE 24-70mm f2.8 and 70-200mm f2.8. The FE 16-35mm f2.8 GM also became Sony’s second lens, after the FE 100-400mm GM, to feature a floating focus mechanism which shifts two groups of elements simultaneously. This should allow the lens to delivery very high resolution throughout its focusing range, even close-up, while also reducing focus breathing. Both groups are also driven by Direct Drive SSMs for fast, quiet and smooth focusing. Finally, the front element has a fluorine coating, the body is weather-sealed, and there’s a focus hold button which can be customized within the camera. Meanwhile, Nano AR coating should minimize flare and ghosting.
To find out whether the Sony FE 16-35mm f2.8 GM rightfully earns a recommendation I tested it on the 42MP Sony A7R II body and compared it against the Tamron 17-28mm f2.8 Di III. So if you’re planning to get a constant f2.8 aperture wide-angle zoom lens for your full-frame Sony mirrorless body, you’ve come to the right place!
Facts from the catalog
As usual I’ll have a look at the technical data of the Sony FE 16-35mm f2.8 GM (“Sony GM” for short) first. I’ve rated the features with a [+] (or [++]), when it’s better than average or even state of the art, a  if it’s standard or just average, and [-] if there’s a disadvantage. For comparison I use the Tamron 17-28mm f2.8 Di III (“Tamron”) and the Sony FE 16-35mm f4.0 ZA OSS (“Sony ZA”).
Size (diameter x length): 89 x 121mm (3.5 x 4.8in.) plus 23mm for the lens hood which is 107mm in diameter. Zooming back to 16mm focal length extends the lens another 14mm to a total length of 158mm including lens hood. That’s pretty long. The Tamron is much smaller at 73 x 99mm + 25mm lens hood and does not change its length while zooming. The Sony ZA is 78 x 99mm without lens hood. 
Weight: 680g (24.0 oz.) plus 31g for the lens hood. The Tamron is lighter at 420g + 22g lens hood, the Sony ZA is 518g + 31g lens hood. 
Optics: 16 elements (including 2 special dispersion and 5 aspherical elements) in 13 groups, a pretty complex design. The Tamron has 13/11 elements/groups similar to the Sony ZA (12/10). [+]
Closest focus distance is 0.26m (10.2in.) with a magnification of 1:4.8 at 35mm focal length using manual focus. This is quite useful but you have a working distance of only 12cm (4.7in.). A magnification of 1:10 is achieved at 0.46m (1.5ft.) giving a working distance of 0.30m (1.0ft.) with lens hood attached. The Tamron goes down to 1:4.3 at 17mm focal length but has an even shorter working distance of only 6cm. The Sony ZA achieves maximum magnification of 1:5.3 at 0.28m. [+]
Filter-thread: 82mm. The Tamron uses 67mm filters which are much smaller and cheaper. The Sony ZA has a 72mm filter-thread. 
Image stabilization: The lens itself offers no optical stabilization just like the Tamron. But modern Sony bodies provide built-in sensor-shift stabilization over 5 axis. The Sony ZA has its own optical stabilization. 
Auto focus: Yes. Manual-focus override is by simply turning the focus ring. The focus ring has a linear gearing with a throw of 140 degrees which allows for precise manual focus and smooth focus pulling for videographers. The Sony GM also has an additional focus hold button which can be customized within the camera. The Tamron has non-linear gearing. [+]
Covers full frame or smaller. Same with the competition. [+]
Price: a whopping 2340 EUR (incl. 19% VAT) / 2200 USD. The Tamron is listed at less than half the price (1000 EUR / 900 USD) but then it also has a smaller zoom-range. Meanwhile the Sony ZA with its f4.0 focal ratio costs 1050 EUR / 1350 USD. 
Comes with a nice padded lens case but without strap. The lens hood is included, reversible for transport, and has a lock to prevent it from accidentally falling off. The Sony ZA also has a nice lens case, the Tamron comes without pouch/strap. [+]
Aperture ring: No, just like the Tamron and Sony ZA. 
Sealing: yes, a rubber grommet at the lens-mount plus further weather-sealing throughout the construction and fluorine coating on the front lens for easier cleaning. Similar to the Tamron and Sony ZA. [+]
The score in the “features-department” is 0[-]/6/6[+]. The lens has a very useful zoom-range at a constant f2.8 focal ratio and good weather sealing. The focus hold button, lockable lens hood, and nice lens case are welcome features too. But then the lens also costs a pretty penny.
There is no exact match for the Sony FE 16-35mm f2.8 GM. You either have to pick a different zoom-range or go for a smaller focal ratio:
- Tamron has the 17-28mm f2.8 Di III from 2019 for 1000 EUR / 900 USD. It’s small, and light but gives up 20% reach on the long end: the Tamron’s narrowest angle of view is 75 degrees versus 63 degrees of the Sony GM (see comparison of coverage below). For more details have a look at my Tamron 17-28mm f2.8 Di III review.
- If you don’t need a focal ratio of f2.8 Sony also offers the stabilized FE 16-35mm f4.0 ZA OSS selling for 1050 EUR / 1350 USD.
An ultra-wide angle zoom lens might be an alternative if you can give up some reach on the long end or simply complement it with a standard 24-70mm f2.8 zoom:
- The Sigma Art 14-24mm f2.8 DG DN is an original mirrorless design for E-mount which should soon be available (1530 EUR / 1400 USD). It is the largest (85x131mm) and heaviest (795g) alternative. This lens is not to be mistaken for the Sigma Art 14-24mm f2.8 DG HSM, a DSLR design from 2018 which is much bulkier and heavier still.
- Go even wider with Sony’s FE 12-24mm f4.0 GM from 2017 (1700 EUR/USD). The lens is 87x117mm and weighs 565g. For more information and sample images have a look at Gordon’s Sony FE 12-24mm f4G review so far.
With both ultra-wide angle zoom lenses you lose 11mm (30%) reach on the long end compared to the Sony GM. But for that you gain 7 degrees (Sigma 14-24mm) resp. 15 degrees (Sony 12-24mm) angle of view on the short end. And that extra coverage is very visible. Be aware though that due to the bulbous front element both ultra-wide zooms cannot use standard filters.
Here is the angle of view that the Sony FE 16-35mm f2.8 GM covers with its 2.2x zoom:
The Tamron 17-28mm f2.8 Di III captures a visibly smaller range with its 1.6x zoom:
Focus and zoom
Focus accuracy and repeatability is critical to consistently produce sharp shots. Repeatability (the accuracy of focus on the same subject after repeated focus-acquisition) of this lens at 35mm focal length is not so good: Reikan FoCal measured only 94.8% with a clear difference in resolution of about 10% with the lens hitting the (focus-) mark consistently better when coming from farther away. See the following 100% crops when focusing on the FoCal target at 1.6m distance:
On the left is a typical result when the lens was coming from 10m focus distance, on the right when it came from 0.8m. I also encountered this effect under real-life shooting conditions but it may be a singular problem of my copy. At 35mm focal length the lens focuses quickly in around 0.6 sec from infinity to 0.46m (1:10 magnification).
The zoom ring turns through 65 degrees and has a 19mm wide rubber surface with a good grip. It is not too stiff and can be operated with one finger. The focus ring is 16mm wide and is located at the front-end of the lens. It moves very smoothly and can easily be operated with one finger.
AF-operation of the Sony GM is inaudible from the outside and when you record video with the built-in microphone. As you pull focus, you’ll notice some focus breathing: the image becomes a little less magnified at closer focusing distances. When I adjusted the focus from infinity to 0.46m (1:10 magnification) at 35mm focal length, I measured a 5% decrease in magnification. The same test at 16mm focal length did only produce a 2% decrease. So focus breathing of the Sony GM might not be too annoying when recording video but the Tamron 17-28mm f2.8 Di III has even less.
Next check out my quality results!Check prices on the Sony FE 16-35mm f2.8 GM at Amazon, B&H, or Adorama, or Wex. Alternatively get yourself a copy of my In Camera book or treat me to a coffee! Thanks!>