The Tamron 28-200mm f2.8-5.6 Di III RXD (mannequin A071) is an all-in-one zoom designed for Sony’s Alpha mirrorless cameras and corrected for full-frame sensors. Introduced in June 2020, it’s a extra reasonably priced and light-weight different to carrying Tamron’s 28-75mm f2.Eight Di III plus 70-180mm f2.Eight Di III zoom lenses though you lose-out on a relentless f2.Eight focal ratio – and a few picture high quality.
Bodily, the 28-200mm f2.8-5.6 Di III is a little bit smaller and 200g / 7 oz. lighter than the choice from Sony, the FE 24-240mm f3.5-6.Three OSS, and each lenses prolong whereas zooming. The brand new Tamron has no optical stabilization and depends solely on the picture stabilization supplied by the Sony Alpha mirrorless cameras whereas the Sony FE 24-240mm f3.5-6.Three OSS has optical picture stabilization.
In my assessments I in contrast the brand new Tamron 28-200mm f2.8-5.6 Di III to the choice from Sony – and the equally new Nikon Z 24-200mm f4.0-6.Three VR. The Nikon could appear like an odd alternative on this comparability however Tamron has introduced that they’re engaged on Z- and RF-mount variations of their lenses. PS – in case you’re within the different full-frame zoom lenses for E-mount in Tamron’s line-up take a look at my in-depth evaluations: Tamron 17-28mm f2.Eight Di III RXD assessment / Tamron 28-75mm f2.Eight Di III RXD assessment / Tamron 70-180mm f2.Eight Di III VXD.
Details from the catalog
Let’s examine the brand new Tamron 28-200mm f2.8-5.6 Di III to the Sony FE 24-240mm f3.5-6.Three OSS (“Sony” for brief) and the Nikon Z 24-200mm f4.0-6.Three VR (“Nikon”). As standard I’ve rated the options with a [+] (or [++]), when it’s higher than common and even state-of-the-art, a  if it’s customary or simply common, and [-] if there’s a drawback.
Dimension (diameter x size): At 74 x 117mm (2.9 x 4.6in.) plus 28mm for the lens hood (which is 87mm in diameter) the brand new Tamron is a fairly small lens, even a bit slimmer than the Sony at 81 x 118mm (3.2 x 4.7in) + 36mm lens hood. The Nikon is 77 x 114mm (3.Zero x 4.5in.) + 38mm lens hood. All three lenses have a double barrel design and prolong when zoomed to the longest focal size: The Tamron to 201mm, the Sony to 221mm, the Nikon to 215mm (incl. lens hood). [+]
Weight: 558g (19.7 oz.) plus 25g for the lens hood. Complementing the brand new zoom lens with Tamron’s 17-28mm f2.Eight Di III to cowl the very broad finish makes for a light-weight combo of solely 1kg (2.2 lb.) overlaying a 12x zoom vary. The Sony is 744g (26.2 oz.) + 39g lens hood, the Nikon is 565g (19.9 oz.) + 22g lens hood. Btw.: The Tamron 28-75mm f2.Eight Di III plus Tamron 70-180mm f2.Eight Di III weigh 1.4kg (3.1lb.) collectively (incl. lens hoods) – a sizeable distinction in comparison with the brand new super-zoom. However then you definately acquire a relentless f2.Eight aperture. [+]
Optics: The Tamron 28-200mm f2.8-5.6 Di III employs 18 parts in 14 teams together with Three particular dispersion parts and Four aspherical parts. The Sony and Nikon are of a equally advanced building. [+]
Focal ratio: The Tamron begins with a shiny f2.Eight focal ratio on the quick finish which is 2/Three of a cease brighter than the Sony and 1 cease brighter than the Nikon. At 70mm focal size the Tamron is at f4.0, the Sony at f5.Zero and the Nikon at f6.0. The Tamron achieves its slowest focal ratio of f5.6 from 150mm focal size onward. So the Tamron maintains a 2/3-1EV benefit in mild gathering energy and topic isolation over the Sony resp. Nikon as much as a focal size of 150mm. [+]
Protection: With its 10x zoom-range the Sony has the higher hand over the 7.1x protection of the Tamron and the 8.3x vary of the Nikon. This provides the Sony and Nikon a 9 levels wider angle of view on the quick finish (84 levels vs. 75 levels). And at 240mm focal size the Sony has 20% extra attain on the lengthy finish in comparison with the Tamron and Nikon. 
Closest focus distance is 0.19m (0.6ft.) with a magnification of 1:3.Zero and a working distance of solely 5 cm (2in.) at 28mm focal size. At 200mm focal size most magnification is 1:3.5 which remains to be fairly good and ends in a way more usable working distance of round 0.57m (1.9ft.). The Sony and the Nikon obtain their most magnification at their longest focal size: it’s 1:3.6 at 0.6m working distance for the Sony and 1:3.Four at 0.49m working distance for the Nikon. A magnification of 1:10 is achieved on the longest focal size at 2.07m (6.8ft.) distance for the Tamron, 2.39m (7.8ft.) for the Sony, 2.04m (6.7ft.) for the Nikon. [+]
Filter-thread: The Tamron 28-200mm f2.8-5.6 Di III shares the identical 67mm filter-thread with the 17-28mm f2.Eight Di III, 28-75mm f2.Eight Di III, and 70-180mm f2.Eight Di III which could be very handy – and saves prices. The Nikon additionally wants 67mm filters, the Sony takes 72mm filters. [+]
Picture stabilization: The brand new Tamron doesn’t supply optical stabilization. The lens solely depends on the sensor-based picture stabilization of the Sony Alpha mirrorless cameras. Each the Sony and Nikon zoom lens have optical picture stabilization constructed by which works along with the sensor-based picture stabilization of their respective digicam our bodies. 
Auto focus: Sure, with built-in stepping motor drive. Guide-focus override is by merely turning the devoted focus ring. The main target ring has a variable gearing (like Tamron’s different 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 not possible. [+]
All three lenses on this comparability cowl full body sensors or can equally be used on a cropped APS-C/DX digicam physique: the Tamron 28-200mm on a Sony Alpha 6×00 is equal to a 47-300mm zoom lens on a full-frame digicam physique. [+]
Value: The lens comes at a really helpful retail value of 869 EUR (incl. 19% VAT) / 729 USD / 799 GBP. The Sony goes for 780 EUR / 1050 USD / 690 GBP, the Nikon is at 970 EUR / 900 USD / 850 GBP. So the brand new Tamron appears a bit overpriced in EUR and GBP contemplating its narrower zoom-range and lacking optical stabilization compared to the Sony and Nikon. However I believe we’ll be seeing avenue costs for the Tamron which can be significantly beneath the RRP. 
The lens comes with out a pouch however the lens hood is included and is reversible for transport. Similar for the Sony. 
Aperture ring and different management parts: The brand new Tamron has a zoom-lock (as has the Nikon) however neither of the three lenses has a change for AF/MF or picture stabilization. The Nikon has a multi-function management ring which will be assigned to function the aperture, publicity compensation, ISO or focus. 
Sealing: sure, a rubber grommet on the lens-mount plus additional particular weather-sealing all through the development, similar to the Sony or Nikon. However the Tamron and Nikon have fluorine-coating on the entrance factor to repel water, mud, and dust and make cleansing simpler – a characteristic the Sony misses. [+]
The rating within the “features-department” is 0[-]/5/8[+] which makes the brand new Tamron 28-200mm f2.8-5.6 Di III appear like a nicely balanced design. On the plus facet is its small dimension and low weight along with a big f2.Eight focal ratio on the quick finish plus a really helpful magnification in close-up taking pictures. The lacking optical picture stabilization may not be too massive a disadvantage because the stabilization of Sony mirrorless our bodies is fairly efficient. However you may not like that the lens begins at 28mm on the quick finish. 24mm focal size is typically the ticket to get the framing proper in broad panorama or structure pictures. Right here the Sony FE 24-240mm f3.5-6.Three OSS has a transparent benefit with its 24mm beginning size and its 10x zoom vary.
Three super-zoom lenses
At the moment there’s just one different for Tamron’s 28-200mm zoom lens out there in Sony’s E-mount, and for Nikon’s Z-mount there’s additionally just one:
- Sony’s stabilized FE 24-240mm f3.5-6.Three OSS for about 780 EUR / 1050 USD / 690 GBP is a mirrorless design from 2015. It’s 200g heavier and a couple of/Three of a cease slower over many of the zoom vary than Tamron’s new 28-200mm. Its main advantages are the optical stabilization and the better zoom-range from 24mm to 240mm. This provides a 9 levels wider angle of view on the quick finish and 20% extra attain on the lengthy finish over the Tamron.
- The Z 24-200mm f4.0-6.Three VR is Nikon’s first super-zoom for his or her new Z collection of mirrorless cameras and prices 970 EUR / 900 USD / 850 GBP. It has optical picture stabilization and shares the advantage of beginning at 24mm focal size with the Sony. In dimension and weight it is rather much like the Tamron. For extra data see my Nikon Z 24-200mm f4-6.Three VR assessment-so-far which I quickly hope to increase right into a full assessment.
Right here is the angle of view that the brand new Tamron 28-200mm f2.8-5.6 Di III covers with its 7.1x zoom in comparison with the protection of Sony’s 10x zoom and Nikon’s 8.3x zoom:
The distinction between the Sony and Nikon beginning at 24mm versus the Tamron beginning at 28mm is clearly seen and is likely to be a decisive issue for selecting a zoom lens. Not at all times are you able to step again with a 28mm lens to get the broader view of a 24mm lens. And the opposite factor of notice: The advantage of reaching 240mm with the Sony is probably not as massive as anticipated. If the picture at 200mm is sharp sufficient, cropping a 42MP shot at 200mm to match the angle-of-view of at 240mm nonetheless nets you round 29MP. This may nicely be sufficient for the supposed function.
Right here is an instance from the Tamron 28-200mm at 200mm cropped to match the Sony FE 24-240mm at 240mm:
Focus and zoom
Focus accuracy and repeatability is crucial to persistently produce sharp pictures. In my take a look at I discovered that my copy of the Tamron produced 10 fully de-focused outliers over a collection of 48 pictures. Which was fairly a shock as the very same take a look at with the Sony 24-240mm a couple of minutes earlier than didn’t produce a single outlier. The mis-focus of the Tamron was clearly seen within the viewfinder and underneath regular circumstances you merely would have activated autofocus once more till it locked on the right track. If I dismiss the whole failures from the statistics repeatability (the accuracy of deal with the identical topic after repeated focus-acquisition) of this lens at 200mm focal size is nice (measured 97.8% in Reikan FoCal) with nonetheless one delicate outliers over a collection of 38 pictures. Typically there isn’t any focus variation whether or not the lens focuses from a more in-depth distance or from infinity however Eight out of 10 full failures got here from a more in-depth distance. At 200mm focal size the lens focuses in round 0.6 sec from infinity to 2.06 m (1:10 magnification), which isn’t very quick and a bit slower than the Sony 24-240mm or Nikon Z 24-200mm which focus in round 0.5 sec.
The zoom ring turns by means of 75 levels the way in which Sony (and Nikon) customers are used to and has a 34mm broad rubber floor with grip. It turns with fairly some resistance and can’t be operated with one finger. The lens nonetheless reveals a little bit zoom creep however the zoom lock at 28mm can stop that. The main target ring is barely 13mm broad and is positioned nearer to the digicam. It additionally has a rubberized floor, strikes easily, and might simply be operated even along with your pinky.
AF-operation of the brand new lens is inaudible from the surface or in case you file video with the built-in microphone.
As you pull focus, you’ll discover some focus respiration: the picture turns into a little bit extra magnified at nearer focusing distances. After I adjusted the main focus from infinity to 2.07m on the brand new Tamron at 200mm focal size, I measured a 1% improve in magnification. That is hardly seen and may please videographers. The identical take a look at at 28mm focal size produced lower than 1% lower. Each the Sony and the Nikon exhibit equally insignificant focus respiration.
I additionally examined whether or not Tamron’s latest zoom lens permits you to change the focal size with out altering its focus. This attribute is named parfocal. I targeted the lens at 200mm after which slowly zoomed again to 28mm checking deal with the way in which. The 28-200mm f2.8-5.6 Di III didn’t maintain its focus completely. It was shut, however for greatest outcomes you higher re-focus after altering focal size.
To check the effectiveness of the picture stabilization with the Tamron 28-200mm f2.8-5.6 Di III on a Sony A7R II digicam physique, I did a collection of 140 test-shots hand-held at 200mm focal size and examined with shutter speeds from 1/200 of a second right down to 1/6 sec. I used the pictures at 1/200 sec with SteadyShot=off as reference of how good my hand-holding was on the time of the take a look at and Reikan FoCal did the chore of evaluating the sharpness of all pictures.
Right here’s the outcomes: With SteadyShot switched on the combo produced outcomes right down to 1/50 sec (2 stops) which had been on common no less than as sharp as at 1/200 sec with SteadyShot=off. At 1/25 sec (Three stops) outcomes had been nonetheless fairly constant however on common a bit worse than the outcomes at 1/200 with SteadyShot=off. At 1/12 sec (Four stops) outcomes grew to become fairly erratic with 50% clearly blurred pictures and at 1/6 sec (5 stops) solely 20% of the pictures had been usable – however just for smaller output sizes. This can be a Three cease benefit from the picture stabilization of the digicam at 200mm focal size. The Sony FE 24-240mm f3.5-6.Three OSS didn’t produce higher outcomes from its optical stabilization (additionally examined at 200mm focal size) whereas the Nikon is the winner right here with very efficient 5 stops of stabilization.
Subsequent take a look at my high quality outcomes!