src="http://www.mirrorlessons.com/wp-content/themes/mirrorlessons Sigma lenses on the Sony A7r II: A personal round-up
MirrorLessons
Lens Reviews

Date: 21/12/2015 | By: Mathieu

Sigma lenses on the Sony A7r II: a personal and on-going round-up

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Sigma lenses on the Sony A7r II: a personal and on-going round-up

Since we purchased the Sony A7r II for our in-depth analysis, I have had the chance to test the camera with many different lenses including third-party DSLR lenses. There are two main reasons behind testing non-native E-mount glass. First, it was part of my in-depth autofocus test where I came to quite a positive conclusion. The second is a consequence of the first reason: I wanted to find out if some of these lenses could be integrated into a mirrorless system despite not being designed for Sony cameras in the first place.

The Sony A7r mark II has many interesting aspects but as with every mirrorless system, size and weight remain the two primary benefits. This is where the first obstacle appears: most DSLR lenses are larger and heavier and they can unbalance the small A7r II body. Can some specific lenses be worth it anyway? In my opinion, yes, but only up to a certain point.

You might ask why Sigma instead of Canon, Nikon or even Tamron lenses?

The first argument is very simple: Sigma UK has been very collaborative in sending us various samples. The second reason is that Sigma lenses are a good mix between an affordable price and excellent optical quality. This is especially true in the case of the Art series. I do not own any DLSR lenses and the only reason I’d consider one would be to fill a gap while waiting for more native FE lenses to show up. So I would not want to spend too much money knowing that I wouldn’t keep the lens forever.

In this article, you will find my impressions of the various Sigma lenses I’ve tried so far with the A7r mark II. I chose what to test by following a certain logic. First it had to be a focal length that is currently not available as a native FE lens or that has a significant advantage over the Sony E-mount equivalent. For example I excluded the 50mm Art because nothing beats the FE 55mm f/1.8 for both its optical quality and small size. The difference in price is not big and if I include the cheapest adapter, then the 55mm is on par.

Please also note that this article isn’t a definitive guide but rather a personal and “work-in-progress” feedback. I couldn’t test the camera with every lens mount version or with every adapter available. Therefore not all the conclusions about each lens are definitive.


Introduction: choosing the adapter and mount version

I’ve already said it but I’ll repeat it here as well: these lenses are not designed for the A7r II and need an adapter to work. This means that there are three different parts made by two or three different manufacturers working together. The results won’t be perfect. The autofocus won’t be perfect. Even if an adapter works well with a specific EF-mount lens, this doesn’t mean it will work well with all EF lenses. Actually, some lenses won’t work at all. In my experience, the only tangible thing I noticed is that the most recent lenses tend to behave better concerning the AF performance.

First, there is the question of which mount to choose: Sony A, Canon EF or Nikon F?

I’ll exclude Nikon because as of now, only one adapter (made by Commlite) with Phase Detection AF support is available. It was released recently which means that there isn’t a lot of feedback about its performance yet.

Choosing the Sony A-mount version could seem the most logical choice. However not every Sigma lens has an A-mount option, especially the latest products. I can also add that overall I didn’t notice a substantial difference concerning the AF speed when using A-mount lenses instead of EF lenses. The Sony LA-EA3 adapter is good but it is not perfect. More than once the camera switched to MF and I had to unmount/mount the adapter to fix the problem. So the logic that “Sony with Sony should work better” isn’t necessarily true.

That leaves us with the Canon EF-mount version. They are simply easier to hire while A-mount lenses are harder to find even in most camera shops. Usually you need to order them at the shop itself or online (note that this can vary from country to country).

Concerning EF-mount adapters, the Metabones EF to E Mount Smart Adapter Mark IV is the best option. No surprises here, everyone has pretty much come to the same conclusion. I hired it while working on my in-depth autofocus article with the A7r II. It has the most precise build quality, the most accurate AF results and can be updated via firmware to improve its performance. The only downside is the very expensive price tag (almost $400). This is why I didn’t purchase it personally. I couldn’t justify such a cost while not being sure if I would ever consider buying one of these lenses anyway. The Commlite and Viltrox weren’t available at the time so I turned to the Fotodiox Pro EF-Nex Auto. It is not perfect as you will see below but was enough for me to get an idea of what you can do with these lenses on the A7r II.


Sigma 20mm f/1.4 DG HSM Art

a7rii sigma lenses

I was mainly interested in testing this lens for astrophotography since it is the world’s fastest 20mm lens. It is large and heavy but for this genre it would be the only lens I’d carry in my bag and I would use a tripod all the time. The AF is very fast and reliable, and sharpness at the centre is already stunning from 1.4. The bokeh as well as the capacity to separate the subject from the background are extremely good despite the focal length being so short.

sigma lenses on sony a7r ii
A7r II, 1/160, f/1.4, ISO 125
sony a7r ii sigma 20mm art
A7r II, 1/100, f/11, ISO 125
a7r ii sigma 20mm art astrophotography
A7r II, 10s, f/1.4, ISO 3200

Unfortunately as of now my conclusion isn’t positive. While the lens seems to perform really well on a Nikon or Canon camera, with the A7r mark II you get significant field curvature which isn’t really interesting for astrophotography. I couldn’t test it with another adapter so it could be that sharpness improves with the Metabones Mark IV. But at the same time, this is the only wide angle lens that gave me such a noticeable problem with the Fotodiox Pro. This just shows how things can vary from lens to lens, and how difficult it can be to find the optimal combination (if there is one).

  • What works: AF is fast and accurate, sharpness at the centre is stunning
  • What doesn’t work: field curvature is pronounced
  • Benefit of the doubt: performance could improve with the Metabones Mark IV concerning sharpness at the corners
  • A-mount version: not available.
  • Any native FE lens as an alternative?: none

Sigma 24mm f/1.4 DG HSM Art

a7rii sigma lenses

This is my favourite lens so far. The Nikkor 24mm f/1.4 AF-S was one of my go-to lenses when I had my Nikon D700 and I was very pleased to try a new 24mm 1.4 on a full frame sensor. It isn’t too large or heavy which means that the ergonomics with the camera remain acceptable. The AF is fast and accurate, probably the best I’ve tried out of all the lenses in this article. It works well in good light, low light and backlit situations even with the Fotodiox Pro.

The optical quality is really surprising, from the sharpness at f/1.4 to the quality of the bokeh and how the lens can separate the subject from the background (even with a full body shot). The 24mm can suffer from large and circular lens flares but I find them interesting, actually! With the Fotodiox Pro, the only negative aspect is some internal reflection in strong and direct backlit situations.

sigma lenses for a7rii
A7r II, 1/640, f/1.4, ISO 100
a7r ii sigma 24mm 1.4
A7r II, 1/2500, f/1.4, ISO 100
a7rii sigma 24mm art
A7r II, 1/400, f/11, ISO 100

The only doubt I have about the 24mm has to do with the native Zeiss Batis 25mm f/2. Granted, 1mm on a wide angle lens makes some difference and you lose 1 stop of light. However the Batis lens’ performance is as good as the Sigma in many ways. It really becomes a matter of precise specs (f/1.4 vs f/2 mainly) and the price. The Batis is more expensive even including a Fotodiox or Commlite adaptor for the Sigma. Right now the Batis isn’t so easy to find either.

  • What works: AF is fast and accurate, optical quality is excellent, size and weight is more than acceptable.
  • What doesn’t work: some internal reflections appearing at the extreme corners in backlit situations but that is certainly due to the Fotodiox Pro adapter.
  • A-mount version: not available.
  • Any native FE lens as an alternative?: The Zeiss Batis 25mm f/2 is the closest you can find for now (full review here).

Sigma 35mm f/1.4 DH HSM Art

a7rii sigma lenses

The only reason I wanted to test this lens was to see if it could be an interesting alternative to the native FE 35mm f/1.4 Distagon lens. The latter is excellent when it comes to optical quality but is also the most expensive FE lens you can find right now (more than $1500). It has something more when it comes to pure optical performance but the Sigma Art 35mm is an excellent alternative. With the adapter it doesn’t look much larger because the FE 35mm is also one of the largest and bulkiest native lenses you can find.

sigma lenses on sony a7r ii
A7r II, 1/250, f/1.4, ISO 100
sony a7r ii sigma 35mm art
A7r II, 1/160, f/5.6, ISO 100

The best AF performance is with the Metabones mark IV so that is another cost to take into account. Also if you are looking for a fast 35mm lens to use every day for professional work, the Zeiss Distagon might be a safer bet. After all, an adapter in the way can sometimes give you a hard time when you least expect it.

  • What works: Even by adding the adapter’s cost, it remains cheaper than the FE 35mm f/1.4 with similar size/weight. Optical performance is really good.
  • To consider: Works best with the Metabones Mark IV.
  • A-mount version: Available. According to multiple hands-on reports (here, here and here for example), it works well with the A7r II.
  • Any native FE lens as an alternative?: The Sony Distagon 35mm f/1.4 ZA. For daily work, it could prove a more reliable long-term investment. If you shoot video, it has a de-clicking aperture option.

Sigma 24-105mm f/4 DG OS HSM Art

 

The native FE 24-70mm f/4 received many mixed reviews and I wasn’t that impressed when I tried it myself. When it comes to f/4 zoom lenses, why not have a more versatile range of focal lengths? This is why the Sigma 24-105mm Art could prove an interesting alternative. Here again the size and weight don’t unbalanced the combo too much but you definitely feel the weight a little more in comparison to the 24mm and 35mm primes.

sigma lenses on sony a7r ii
A7r II, 4s, f/16, ISO 50
sony a7rii sigma 24-105 art
A7r II, 1/2000, f/4, ISO 100
sony a7r ii 24-105 sigma
A7r II, 1/40, f/5.6, ISO 100

The AF is fast and reliable even with the Fotodiox Pro but slower than some Art prime lenses. The optical quality is good but I admit that in the end this lens didn’t impress me as much as I thought it could. The optical stabilisation works well in conjunction with the A7r II’s 5-axis stabilisation. I personally think it is worth it if you already own an adapter and can therefore save some money versus buying the FE 24-70mm f/4.

  • What works: AF is fast and accurate, OIS works fine and optical performance is rather good.
  • What doesn’t work: it feels a little bit heavy on the A7r II body
  • A-mount version: Available. According to Brian Smith it works well but I haven’t found other relevant reports. “Try before you buy” (if possible).
  • Any native FE lens as an alternative?: The Sony Vario-Tessar T FE 24-70mm f/4 ZA OSS is the closest choice.

Sigma APO 70-200mm F2.8 EX DG OS HSM

sigma lens on sony a7r ii

There are currently no f/2.8 constant aperture zoom lenses available in the FE catalogue. There are rumours about Sony releasing them next year but in the meantime we have to choose either the f/4 zoom lenses or adapt another one. Here again the Sigma 70-200mm f/2.8 could seem like a good alternative. It is not excessively large and heavy for a 2.8 telephoto zoom and offers good optical performance at a very reasonable price.

a7r ii sigma 70-200mm
A7r II, 1/50, f/2.8, ISO 6400

Unfortunately the AF doesn’t work with any of the EF to E adapters (not even the Metabones Mark IV). I used it one night only at a concert, relying on manual focus and a monopod because my subjects were static. It proved interesting for video shooting as well. That said, I wouldn’t invest money in it knowing that the AF is not reliable.

  • What works: Good optical quality and affordable price.
  • What doesn’t work: AF doesn’t work with any EF-mount adapter.
  • A-mount version: Available. However according to a few short reports found on the web, it doesn’t seem to work well.
  • Any native FE lens as an alternative?: The Sony 70-200mm f/4 G OSS. It is a lens I really like for its compact size and very good performance.

Sigma 85mm f/1.4 EX DG HSM

sigma lenses for a7r ii

Perhaps one of the lenses that photographers are missing the most right now in the E-mount line-up is a fast portrait lens. Zeiss answered that with the excellent Batis 1.8/85 but many users aren’t convinced by the price of the lens considering it is “only” a f/1.8 lens. Fortunately there are many options when it comes to good portrait lenses. The Sigma 85mm 1.4 is one of them and once again it has the advantage of being affordable. Sharpness at f/1.4 is good and you can get a very shallow and creamy depth of field from your portraits.

sigma lenses for a7rii
A7r II, 1/160, f/1.4, ISO 100
sigma lenses for a7rii
A7r II, 1/320, f/2, ISO 100
sony a7rii sigma 85mm 1.4
A7r II, 1/2500, f/8, ISO 100

The autofocus was problematic with the Fotodiox but works better with the Metabones Mark IV so once again the most expensive adapter needs to be included in the final bill.

  • What works: Good optical quality and affordable price.
  • To consider: AF works well with the Metabones Mark IV only.
  • A-mount version: Available. AF seems to work but isn’t the fastest according to different reports (works in micro steps according to Mike Kobal).
  • Any native FE lens as an alternative?: The Zeiss Batis 85mm f/1.8. Even if is only a 1.8 lens, I consider it one of the best I’ve ever tried (my full review here). However it is more expensive.

Sigma 150mm f/2.8 Macro

Sony added a stunning macro lens to its FE catalogue: the 90mm Macro f/2.8 G. However if you need more telephoto reach, Sigma has the 150mm and 180mm macro lenses in its catalogue. The latter is considered one of the best macro lenses ever made but it is also very heavy, large and expensive. The 150mm is a more balanced solution for the A7r II and also less expensive. Unfortunately here as well the autofocus is not reliable. It occasionally focuses but it is really slow. Most of the time the lens will simply hunt back and forth and never lock. Also the OIS created some communication problems with the adapter and the camera.

a7rii sigma 150mm macro
A7r II, 1/200, f/11, ISO 1600
sigma 150mm macro on a7rii
A7r II, 1/200, f/8, ISO 1250

However this can be less of a problem because for macro photography you often need to rely on manual focus and use a tripod. I would consider this lens if you can find a good second-hand deal.

  • What works: Good optical quality and acceptable size/weight
  • What doesn’t work: AF and OIS are unreliable
  • A-mount version: Available. According to Brian Smith, it works well. Again, “trying before buying” is advised if possible.
  • Any native FE lens as an alternative?: The Sony 90mm f/2.8 Macro G OSS. If the extra 60mm aren’t necessary, this is currently one of the best lenses for the FE system and works well for portraits too.

Sigma 150-600mm f/5-6.3 C

sigma lenses for a7r ii

After the 24mm f/1.4 Art, this is the second lens I enjoyed the most on the A7r II. I chose the Contemporary version instead of the Sport version because the former is smaller, lighter and easier to use on the smaller A7r II body. With the Metabones Mark IV I got very good results in terms of autofocus performance. It is not perfect as I detailed in the article here but can be a good choice if you need an extreme telephoto lens while waiting for something better from the native E-mount.

sigma lenses for a7rii
A7r II, 1/2000, f/6.3, ISO 400
a7rii sigma 150-600mm
A7r II, 1/60, f/11, ISO 100

The optical performance is not bad at all and you get decent sharpness even at the longest focal length. Note however that past 500mm, you can end up with some misfocused shots more easily. I had to turn off the optical stabilisation because the camera kept switching to manual focus.

  • What works: AF is good with the Metabones Mark IV, optical performance is fine.
  • What doesn’t work: activating the OIS makes the camera switch to MF. Works well with the Metabones Mark IV only. It can misfocus at the longest focal lengths (from 500mm especially).
  • A-mount version: Not available.
  • Any native FE lens as an alternative?: None

Conclusion

As you can see, the performance varies a lot from lens to lens and even the best adapter can struggle. I tried to compile the most accurate list based on my experience. Of course a similar list could be made for Canon lenses instead of Sigma. The choice is vast and that is certainly an advantage. My final piece of advice is to try before buying if you have the chance because the performance won’t necessarily be as good as you were hoping.

With all that said, is adapting DSLR lenses really worth the effort, time and investment?

For me, it is more a No rather than a Yes. The only lens I could really consider from the list above is the 150-600mm C if I were to shoot lots of wildlife. But then I would also consider buying a Canon 6D to simplify my shooting combo. A similar reasoning applies to the 24mm Art, which is definitely the lens I enjoyed the most. Its optical performance is stunning but at the same time the Batis 25mm is smaller, and delivers great optical quality. For my needs, it would be enough.

In the end it is a question of personal choice, budget and most importantly, the end goal. I tend to prioritise practicality. In many situations that require very fast AF and reactivity (events, weddings, etc), a native FE lens can be more reliable. On the other hand, if your work is less frenetic and you have more time to think and compose (landscape, architecture, etc), an adapted lens can work fine and of course can expand your choice when it comes to lenses. It is true that the native E-mount catalogue is not complete right now and Sony made some bad choices to start with. But at the cost of repeating myself too much, I remind you that the FE series has only existed for two years. Let’s give it some time. This is why I consider adapting DSLR lenses a temporary solution more than anything else.

Do you have any experience with the A7r II, DSLR lenses or various adaptors? If so, I would really appreciate reading your feedback below!



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About the author: Mathieu Gasquet

Mathieu Gasquet is a professional photographer with French and Italian origins. Besides running his own video and photography studio 3Dit Lab, he is also the official photographer for the National Cinema Museum in Turin. You can follow him on Google+, Twitter or Facebook!

  • lwestfall

    Nice work! But I think it’s unfortunate to exclude the Sigma 50mm f/1.4 Art, since it is exceptionally sharp, nearly equivalent to the Otus for a fraction of the cost, and it is quite popular and a lot of us have it in EF mount now but are considering moving over to Sony. Anyone have experience with it on an A7RII?
    Update: Here is a very comprehensive AF test we can all find useful:
    http://briansmith.com/canon-ef-to-sony-e-mount-smart-adapter-compatibility-guide/

  • http://www.mirrorlessons.com Mathieu

    Which adapter do you use with the 20mm?

  • Greg Thurtle

    Nice write-up as always Mathieu.

    The sigma 24-35/2 art lens is stunning too, in fact I think this has got to be one of my favourites- works fast on my commlite and fotodiax pro adapters.

    I don’t find the field curvature too bad on the 20mm, sharpness is as you say fantastic as is the bokeh.

    The sony 85/2.8 SAM lens works pretty well with the LA-AE3 adapter as does the sony 70-400 II SSM (not cheap though!) not tried the 2.8 SSM 24-70 or 70-200/2.8’s mainly as they’re crazy expensive in A-mount.

    Fingers crossed more Nikon AF adapters are available soon. I saw a commlite competitor which seemed really quite good.

  • http://www.mirrorlessons.com Mathieu

    Personally I don’t think so either but without testing it, I can give a definitive conclusion. That’s why I leave it as an open question and maybe someone else will answer this later on (unless I manage to test the lens again with the Metabones). There can be some difference between one adapter and the other if one is built more precisely. I don’t think that the Metabones would solve the problem entirely, but it could improve it slightly.

  • Steve S.

    Re the 20/1.4 DG HSM ART in the summary, you wrote:
    * performance could improve with the Metabones Mark IV concerning sharpness at the corners
    Really, it can’t. Field-curvature is field-curvature, and neither of these adapters have any optical elements to compensate (or they’d cause problems for other lenses!). Unless the adapter is introducing some sort of tilt/shift or other registrtation error (which can sometimes look like “asymmetric” field curvature) then changing (glassless) adapters cannot make a difference.

  • drasko

    The commlite is far too slow, also with the new update, though the buildquality of the commlite is very solid and the lens attaches and releases very nice. The viltrox is very usable fast and much cheaper than the metabones. see my comparison review on youtube https://www.youtube.com/watch?v=nnx7IBDj52o

  • http://www.mirrorlessons.com Mathieu

    The 35mm Art is a good alternative to the FE 35mm Distagon and with the Metabones Mark IV you should get good AF performance too 😉

  • alba63

    Hi,

    thank you for the writeup. If I were a professional shooter, I’d probably still shoot a Canon or Nikon DSLR. Those systems are complete, reliable and well- proven.

    As an enthusiast shooter image quality is the most important to me. I bought a (second-hand) Metabones adapter IV for my A7rII and with Canon/ Sigma/ Tamron the choice of available high quality lenses is just very big, whereas the Sony lineup is still too small, and what’s available is often very expensive for what is offered (70-200 F4, Batis 85mm, 24-70 F4). I use some older Canon mount lenses that are not 100% reliable in terms of AF, but optically up to the task (42MP on A7rII), which is already very nice.

    One of my next lenses will be 35mm, Sony’s own 35mm turned out to be less than satisfying optically, the 35/1,4 is big, heavy, quite slow focussing, and very (!) expensive. So I’ll try the Sigma Art. I loose some AF flexibility, but, honestly, AF performance is completely overrated these days. Only a small fraction of what I see online is action driven, so AF is not that important.

  • http://www.mirrorlessons.com Mathieu

    Let me know how it works for you 😉

  • KonstantinosAnt

    Thank you so much for this detailed article, Mathieu. I am waiting for the Fotodiox EF>E to arrive tomorrow and will test with my lineup of 24, 35, 50 Art and the 18-35 Art for video. I wanted to get the Metabones, but it was hard to find or out of stock in several places I looked – seems lots of a7Rii users are heading that way.

  • http://www.mirrorlessons.com Mathieu

    Do you find the Viltrox better than the Commlite? I guess you get better performance concerning the AF now that you can select phase detection manually also on the A7 II.

  • drasko

    I totally agree with your report, the Sigma 24 mm 1.4 is amazing on Sony. I´m using the canon mount version with the Viltrox adapter, see my review here with lots of images and video http://www.dsphotoblog.com/?p=204 The Sigma 24-105 mm looks like a winner too, would love to test it.

  • http://www.mirrorlessons.com Mathieu

    The A-mount lenses I tried where mostly used before the firmware 2.0 so I can’t really comment on that yet.

  • Edak

    Great review as usual. I’m just missing the firmware version.
    I was told by Sony serviceman, that AE3 adapted lenses can have troubles with firmware 2.0 or 3.0.

  • http://www.mirrorlessons.com Mathieu

    Yes I agree the 40mm pancake would be nice to try and its size is perfect for mirrorless, even with the adapter :)

  • http://www.mirrorlessons.com Mathieu

    Merci Marc. With manual focus lenses the choice is even vaster, but I didn’t mention them here to avoid confusion :)

  • http://www.mirrorlessons.com Mathieu

    Thanks. Enjoy your Batis lenses, I really like them myself 😉

  • http://www.mirrorlessons.com Mathieu

    That would be valid only for the Sony A-mount, not E-mount. Also the lens in the requested mount must have been released by SIGMA as a product. So it won’t work for the recent 20mm for example.

  • http://www.jluk.photo Jean-LuK

    It seems to me that much of these optics is now available in original E mount.
    Alternatively, one can use the mount conversion service.
    http://www.sigma-global.com/en/lenses/cas/service/mcs/index.html

  • soundimageplus

    With my adapters for m4/3 cameras I’m using exclusively Canon lenses, because they can be bought at very reasonable prices S/H and the adapters are engineered using them and are designed mainly for them. I avoided Sigma as i read on various sites that some don’t even AF, not sure why. If you get the chance try the Canon 40mm f/2.8 ‘pancake,’ one of the sharpest lenses I’ve ever owned and around £130 new. Creates these amazing files on my Canon 5Ds so I suspect it would very well on the A7r II.

  • walnut186

    Nice article! Answered a lot of questions for me. I have both Batis lenses and you just substantiated my purchase. Thanks!

  • Marc Baillargeon

    Well done Mathieu! Comprehensive and balanced. I also happen to share your general conclusion after having tried many non-native lenses, although in the manual focus variety. Félicitations et merci!

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