Introduction

You haven’t seen (m)any reviews of superzoom lenses on this blog so far, because traditionally many of those ~10x zoom lenses were either lacking in terms of optical performance (e.g. Sony FE 24-240mm 3.5-5.6 OSS) and/or I personally didn’t find the focal length range particularly useful, often starting at 28mm (e.g. Tamron 28-200mm 2.8-5.6 Di III RXD). Furthermore, if you want to review such lenses properly, it takes a lot of time and effort, equal to reviewing several prime lenses.
With its unique focal length range this Sigma 20-200mm 3.5-6.3 DG Contemporary intrigued me though, but can the performance of such a bold design be any good? I ultimately decided to buy one and see for myself how it performs, so here we are.

Sample Images

You can find many of the sample pictures in full resolution here.

Specifications

As of 2026 there has only ever been one 20-200mm lens and it is this Sigma 20-200mm 3.5-6.3 DG Contemporary. It has the following specifications:

• Diameter: 77 mm
• Field of view: 12.3° to 94.5° (diagonally)
• Length: 117 mm (at 20 mm setting)
• Weight: 537g (without hood[19g] and caps)
• Filter Diameter: 72 mm
• Number of Aperture Blades: 9 (rounded)
• Elements/Groups: 18/14
  
• Close Focusing Distance: varies
• Maximum Magnification: 1:6.5 at 20mm, 1:1.9 at 28mm, 1:1.8 at 85mm, 1:2.9 at 200mm (measured)
• Mount: E-mount, L-mount

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Focal Lengths

This scenery highlights quite well the jump from 20mm (on the edge of ultra) wide angle to 200mm tele.

This is a variable aperture zoom lens, in the following table you can see the maximum aperture values according to camera when set to 1/3 EV steps. If you set your camera to 1/2 EV steps this changes slightly. 

Handling / Build Quality

Unlike Sigma’s Contemporary i-Series prime lenses (e.g. the Sigma 17mm 4.0 DG DN Contemporary), this 20-200mm zoom lens does not feature that all metal casing and seems to be made mostly from Sigma’s high quality polycarbonate.

The rubberized focus ring has decent damping and it takes about 180° from the minimum focus distance to infinity. As is luckily the case for most lenses these days, the coupling is linear, so it doesn’t matter how fast you turn the focus ring.
When you turn your camera off, the lens will remember the last focus position and will still be there when you turn the camera on again.

The focus group also moves around freely when the lens is powered off. This is normal, don’t annoy your dealer with useless returns and exchange requests because of that.

The zoom is mechanically coupled and there was no zoom creep. This is something that may still develop over time though and for that case Sigma already included a lock switch for the shortest 20mm setting. 

The zoom ring is situated closer to the camera and has markings for 20, 28, 35, 50, 85, 135 and 200 mm. This is not a parfocal zoom, if you change the focal length, focus needs to be adjusted. Compared to Sony, Nikon and Tamron lenses, the zoom ring rotates in the opposite direction (same as Canon’s lenses), so if you are using zooms from different manufacturers, that has the potential to be bothersome in the field.

The lens comes with a plastic bayonet-style tulip-shaped lens hood that can also be attached reversed.

The zoom design is typical: shortest at the 20mm end, longest at the 200mm end. It is nice to see that Sigma managed to incorporate this zoom range with a single extending tube.

This lens is also surprisingly small considering its massive zoom range. It is only slightly longer and actually thinner than the Sony FE 20-70mm 4.0 G and about the same size as the Tamron 28-200mm 2.8-5.6 Di III RXD.  

Generally this lens works fine on Z-mount cameras via the megadap ETZ21pro+ adapter, but the built-in distortion correction profiles will obviously not work, so this is not a combination I would recommend, as the strong distortion (especially at the wide end) makes properly framing a tedious task.

Autofocus

I am not shooting sports or fast moving animals/humans so if you want to know if the lens is fast enough for this, or how it compares to other lenses in this segment, you may have to look for a different review with a more detailed assessment of this aspect.

For all the applications I used it for, the AF was always fast and accurate and it is also completely silent. 

Vignetting

What would I expect from a lens with these specifications? Definitely strong vignetting at the wide 20mm end and as we can see from the table above that is indeed the case here. Almost 4 EV is definitely a lot, but good news here are, it actually improves on stopping down. From 28mm onwards the vignetting is rather tame, rarely exceeding 2 EV and around 1 EV stopped down. Very similar to other midrange zooms.

The Sony FE 20-70mm 4.0 G was a bit better at the wide end showing “only” 3 EV vignetting at f/4.0, but stopped down and at other focal lengths it doesn’t really manage to pull farther ahead. 

It is recommended to have a look at this article first to get an idea how this brightness graph works.

Sharpness

infinity (42mp Sony A7rII)

Because the lens is obviously supposed to be used with distortion correction we will again be looking at files where the distortion correction has already been applied.

What I was most interested here was, how this Sigma lens compares to the Sony FE 20-70mm 4.0 G, as these are the two standard zooms offering a 20mm setting. Considering this Sigma lens has a much wider zoom range we should also expect the Sony lens to perform better.

Looking at 20mm, this Sigma lens performs similar in the center and midframe, but actually better in the corners. Not something I expected. Comparing them at 35mm, the Sony lens does look a bit better in the corners now. The 85mm setting of this Sigma lens looks no worse than the 70mm setting of the Sony lens. That is an impressive result for this Sigma lens.

When looking at the 200mm setting (where we also clearly see the influence of heat haze) stopping down to f/8.0 can actually be advisable, as it is a bit soft at f/6.3.

I found this lens to be very competent in the 20 to 135mm range from its maximum aperture, only at the 200mm setting I always tried to use f/8.0 instead. 

At the end of the day the performance of this 10x Sigma zoom is very much comparable to the 3.5x Sony FE 20-70mm 4.0 G zoom in the overlapping range, which is an outcome far exceeding my expectations.

close (42mp Sony A7rII)

20mm, 1:6.5

28mm, 1:1.9

85mm, 1:1.8

200mm, 1:2.9

Observations

In the center of the frame the performance is very good at all focal lengths at close distances – again except for the 200mm setting, where stopping down to f/8.0 makes a notable difference.

Now in the 28-85mm range the maximum magnification is most impressive, even exceeding 1:2. However, as often is the case for zooms that focus very close (e.g. the Sony FE 20-70mm 4.0 G or Tamron 70-180mm 2.8 Di III MKI/II), there is very strong field curvature here as can be seen from the overviews I included.

With this Sigma 20-200mm 3.5-6.3 DG C there is a solution to this though: just use the 200mm setting. Here the maximum magnification of 1:2.9 may be slightly less impressive, but there is hardly any field curvature left at this setting.

This zoom lens does not offer the same performance (or maximum aperture) as a dedicated macro lens, but for many close focus applications I found it to work surprisingly well.

Flare resistance

Generally, if you try hard and long enough, you can make almost any lens look bad in this category. Zoom lenses are often more prone to issues here, due to many air-glass surfaces and plenty of moving parts inside.

20mm 

35mm 

85mm 

Observations

The performance here is significantly better than I expected. We can see minor ghosts in a few situations, but not only are these very rare, they can often also be avoided by slight reframing.

Also at longer focal lengths veiling flare is surprisingly not an issue. I didn’t use the hood for any of the pictures in this section. As it has to be very short because of the 20mm setting, it cannot make much of a difference anyway. 

Again this Sigma’s performance here looks better to me than the Sony FE 20-70mm 4.0 G‘s, which was once more unexpected.

Coma correction

20mm

35mm

85mm

200mm

Observations

Considering its wide focal length range, Coma is corrected surprisingly well. At the wide end not only better than the Sony FE 20-70mm 4.0 G, but also better than many of the compact prime lenses like the Viltrox AF 20mm 2.8. 

At 200mm stopping down by about one stop again improves the performance, but this still looks better than many primes from just a few years ago.

Distortion

We see strong and wavy barrel distortion at the 20mm end, almost no distortion around 35mm and strong pincushion distortion from 85 to 200mm. This is actually a very typical behaviour for a zoom lens. 

There is something worth pointing out here though: the Sony FE 20-70mm 4.0 G – despite featuring a significantly narrower zoom range – actually shows worse distortion at the 20mm end which also doesn’t correct as well with the supplied profiles. 

I expected this Sigma lens to perform noticeably worse here than the Sony FE 20-70mm 4.0 G, but that is not the case at all.

Sunstars

20mm

50mm

85mm

200mm

Observations

Using 9 rounded aperture blades is not the optimal configuration for creating distinct sunstars, but the good news is that Sigma improved a lot in this category lately and their modern lenses feature diaphragms with tight tolerances for creating symmetrical sunstars at least when stopped down a lot, whereas their older lenses often produced rather whacky and unsightly ones at any aperture setting.
As this is a highly subjective topic may have a look at this article to see which kind of sunstars you prefer.

Bokeh

Going by its specifications this is obviously not a lens I would recommend if you are into shallow depth of field photography. However, in close focus scenarios you can create a lot of bokeh and when using longer focal lengths and making sure the background is far behind your subject you can still get a fair amount of subject separation from this lens at medium distances.

In close focus scenarios the bokeh is actually surprisingly nice. Towards the corners we do see a bit of cat’s eye bokeh, but nothing overly distracting.

At mid distances you need the longer focal lengths to create some bokeh. In this section we clearly see that the in-focus subjects are well defined at all distances, adding to the subject separation.

With bigger objects – especially when using shorter focal lengths – there is not that much subject separation anymore. A cheap 50mm 1.8 or 85mm 1.8 lens will create more impressive results here if you are looking to create a shallow depth of field.

Nevertheless, especially in close focus scenarios this Sigma 20-200mm zoom creates a decent bokeh which I never found to distract from the main subject – not something I could say about e.g. the first generation Tamron 28-75mm 2.8 Di III RXD.

Chromatic aberrations

Lateral

20mm

200mm

Traditionally superzoom lenses were plagued by strong lateral CA. These days lateral CA are automatically corrected for Jpegs already in camera and also the popular raw convertes correct them directly on import.

I still decided to check what the actual performance without electronic corrections is like and then we start to see a medium amount of lateral CA. As the digital corrections work very well this is not something to worry about and if you are a normal user you won’t be seeing any lateral CA anyway.

Longitudinal

Bokeh fringing hardly exists which might not be too surprising considering this lens’ specifications, but it is still nice for macro applications with a shallower depth of field.

What is more surprising, purple fringing simply does not exist. Even in scenes with extreme contrast like the one below I couldn’t find any discoloring. Impressive and more worthy of an “Apo” tag than many lenses that actually do carry one.

Conclusion

That 20-200mm range sounds great on paper, but what about the actual image quality you can achieve with this lens? In two words: surprisingly good. I am almost tempted to say extraordinarily good – it surely far exceeded my expectations.

Looking at the performance at infinity, field curvature is minimal and at all focal lengths you can expect sufficient corner to corner sharpness. What is more impressive, this is already the case from the maximum aperture, except for the 200mm end, where stopping down to f/8.0 is a good idea. At the 20mm end this Sigma zoom actually outperforms modern (affordable) prime lenses like the Viltrox AF 20mm 2.8, showing better corner resolution and less Coma.

Talking about optical aberrations, hard-to-correct longitudinal CA are non existent. To put things into perspective, this Sigma 10x zoom lens corrects this aberration better than the highly regarded Voigtländer 35mm 2.0 Apo-Lanthar. Coma is low throughout the whole zoom range, flare resistance is better than that of many (also recent) prime lenses we have reviewed here.

If there was something to nitpick about, I could mention the strong field curvature in the 1:2 macro range between 28-85mm. But not only is this the case for most standard zoom lenses focusing similarly close, here you still have an impressive 1:3 magnification at the 200mm end with very little field curvature and better working distance. Some people may also find the direction of the rotation of the zoom ring annoying, as it is the opposite of Sony, Nikon and Tamron lenses and matches that of Canon lenses. 

Unsurprisingly the uncorrected distortion is high, especially at the 20mm end. But it is actually less than what I saw from the Sony FE 20-70mm 4.0 G and the profiles do a better job at correcting it, giving you almost perfectly straight lines after correction. Also the vignetting figures at 20mm are high, this is one of the few areas where I found the Sony FE 20-70mm 4.0 G to perform better – which is actually high praise for the lens being reviewed here, considering the Sony is only a 3.5x zoom versus the 10x range of this Sigma lens.

This is the first zoom lens that offers a similarly versatile range of focal lengths – from ultra wide angle to tele – as the recent high end smartphones (e.g. the Vivo X200 Ultra) without having to change lenses. You can seamlessly go from taking pictures of tight interior spaces at 20mm over vast landscapes to detail tele-shots at 200mm and even take 1:2 macro pictures with it. Going by all this, it is easily the most versatile zoom lens I have ever used and which money can buy today.

On my last trip I combined it with the Laowa 9mm 5.6 and the Viltrox AF 35mm 1.8 Evo and with that portable three lens setup I could take all the pictures I possibly wanted to take.

If there is just one (zoom) lens you want to buy and use, make it this one. 

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Alternatives

In my opinion there is no real competitor to this Sigma 20-200mm 3.5-6.3 DG Contemporary. Among the standard zooms that start at 20mm (or wider) we have the Sony FE 20-70mm 4.0 G, the Tamron 20-40mm 2.8 Di III VXD, and the Tamron 17-50mm 4.0 Di III VXD. Their zoom ranges (2.0x to 3.5x) are obviously not really comparable to this Sigma 20-200mm 3.5-6.3 (10x).

Some people may also see the Tamron 28-200mm 2.8-5.6 Di III RXD or the newer Tamron 25-200mm 2.8-5.6 Di III VXD G2 as alternatives. After having used this Sigma 20-200mm 3.5-6.3 DG C – and previously the Sony FE 20-70mm 4.0 G – I certainly don’t. Having a standard zoom starting at 20mm is such a game changer in my opinion, it easily outweighs a lens being 2/3rds of a stop faster but only starting at 24, 25 or even 28mm.

You can find many more E-mount standard zoom lenses with different focal length ranges discussed in our Sony FE Guide.

Sample images

You can find many of the sample pictures in full resolution here.

Further Reading

• All Lens Reviews
• Review: Sony FE 12-24mm 2.8 GM
• Review: Viltrox AF 35mm 1.2 FE LAB
• Review: Sigma 135mm 1.4 DG Art
• Discuss this review with our Discord community

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BastianK

My name is Bastian and I am your expert here when it comes to ultra wide angle lenses, super fast portrait lenses (ranging from a 50mm f/0.95 to a 200mm f/1.8) and I also have reviewed way too many 35mm lenses. Don't ask me anything about macro or wildlife shooting though.

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