It’s hard to lớn believe that just a couple of years ago Sigma had no lenses for Sony full frame E-mount (FE). They started with a huge drop of “adopted” DSLR lenses that gave them a basic lineup built on their existing lenses, though those lenses were always somewhat compromised. They weren’t designed for the mirrorless flange distance (distance from optical path lớn the sensor), so they had more form size and weight added to them to move the optical path forward & to make room for a built-in adapter to allow focus to lớn work properly on Sony mirrorless. It more or less worked, but never as reliably as native lenses. Part of that initial batch of lenses was the adapted fe version of the Sigma 35mm F1.4 DG ART. That was the very first lens khổng lồ bear the ART name, and, while it has been beloved, its a bit “long in the tooth” at this point và was never designed with Sony mirrorless in mind. But Sigma wasn’t done, as they have gone on lớn produce at least ten other new dn (their designation for mirrorless) lenses during the past two years. Two of those were actually 35mm lenses, including the massive and optically superior 35mm F1.2 doanh nghiệp ART (the first autofocusing F1.2 lens on Sony, which I reviewed here) and, more recently, the compact 35mm F2 dn from their iSeries which I reviewed here. One would think that with three 35mm options available on Sony that Sigma would “rest on their laurels”. It turns out that is in fact NOT the case, as Sigma saw room for a true replacement for the original 35mm F1.4 ART with a brand new lens purposefully designed for mirrorless. That “middle of the road” option that will almost certainly replace the compromised original fe version at retail is the new Sigma 35mm F1.4 DG dn ART lens, which we’ll hotline the 35DN for short in this review. The 35DN has the honor of being the very first lens that I get to đánh giá on my new Sony Alpha 1 which I just reviewed last week.

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In the classic fairytale about Goldilocks everything comes in sets of threes. One is too hot, one is too cold, but one is just right. For many photographers, the 35mm F2 dn will be too small (not a wide enough aperture), the 35mm F1.2 too big (literally and cost-wise), but it is Sigma’s hope that the new 35mm F1.4 dn ART will be the “just right” option. And frankly, that seems lượt thích a likely scenario in my mind. The new lens weighs 450g less (640g) than the 35mm F1.2 (1090g), is 25mm shorter, and costs $600 less. It isn’t as compact as the new Sony 35mm F1.4 G Master lens (which is a svelte 524g và is only 96mm long), but it also has the advantage of being $500 cheaper. The size between the two F1.4 options isn’t radically different, and Sigma’s price advantage & optical prowess will almost certain catch the eye of the “discerning budget” shopper that wants a premium lens but doesn’t want khổng lồ pay a premium price. This is a pretty wide swath of photographers in my experience.


The 35mm F1.4 space on Sony had been rather slim until the arrival this year of the GM lens, and this purpose-built Sigma lens for Sony mirrorless (it is also available for Leica L) will now really flesh out the options. I had hoped to bởi some direct comparisons khổng lồ the GM lens, but it is unfortunately running a little behind in production, & I haven’t gotten my hands on one yet. I’ve been impressed with the Sigma 35DN, however, which is perhaps the sharpest 35mm lens that I’ve ever used.



This is a lens that laughs at the demands of the 50MP sensor that I tested it on, with absolutely incredible contrast & detail from F1.4 on. It may even be too sharp for some, but I’ll let you determine that for yourself as we dive into the review. You can read on or watch my long format definitive or standard đoạn phim reviews below…

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Thanks to Sigma Canada for getting me an early loaner of the lens. As always, this is a completely independent review.

Sigma 35DN Build and Handling

As I noted in the introduction, the 35DN strikes a compelling balance between the massive 35mm F1.2 dn and the more compact F2 lens. This isn’t a smaller lens, but it is very reasonably sized relative to the performance. Here’s a look at a few competing lenses và their basic specs:


Sigma’s formula on Sony mirrorless is similar lớn their previous designs on DSLRs, but with a few key tweaks and improvements. The early ART series lenses lacked weather sealing, but this new doanh nghiệp version has a “dust and splash proof structure” which includes a seal at the gasket along with internal seals at the switches & rings và even a weather và oil repellant coating (like fluorine) on the front element.

Sigma has also taken steps khổng lồ use a wider variety of materials in the construction of the newer lens to reduce the weight relative lớn older Sigma lenses. The weight savings over the previous F1.4 lens is only 115g, but we’ve also got a lens with two additional elements, more features, và a higher optical performance.

Some of those new features include the now ubiquitous aperture ring on Sigma doanh nghiệp lenses, which gives you a really versatile approach to lớn aperture. You can choose either manual or automatic aperture control, choose khổng lồ have “clicks” at the one third stop detents, or to lớn “declick” the aperture ring for smooth control, and you can even engage a quality aperture lock switch that will keep you from inadvertently switching between manual & automatic aperture. That’s a degree of control over the aperture that you rarely see on any lens.

Sigma also includes a focus hold button that can be programmed khổng lồ different functions in the camera toàn thân along with the always-welcome AF/MF switch that still gives you the quickest, most logical way to control that option.

This is a focus-by-wire lens lượt thích all true mirrorless lenses, but Sigma has gotten quite good at focus emulation. The focus ring is wide, nicely ribbed, and has a good amount of damping that makes focus feel quite similar lớn mechanical manual focus. Focus seems lớn be quite linear, from what I can tell, making this a decent choice for clip work.

The iris does a better than average job of keeping a circular shape when the lens is stopped down, which contributes to lớn nice geometry from the lens in bokeh highlights.

Our minimum focus distance is 30cm (one foot), và that gives us a very useful magnification figure of roughly 0.19x. Here’s what MFD looks like:

Contrast & sharpness are good up close, but some field curvature means that you don’t have a good flat plane of focus if you want a lot in focus. If you shooting three dimensional objects, however, it works just fine, và gives you some quality creative options:

The 35DN comes with a nice pouch và a petal-shaped lens hood that has a lock, texture variations, and is certainly a cut above your typical lens hood.

This is a lens that checks all the boxes. It is weather sealed, feature rich, & handles well while maintaining a moderate kích cỡ and weight. Sigma has found a way to lớn manage kích cỡ and weight while still delivering the goods optically, which definitely makes their lenses more tempting khổng lồ me, personally.

Sigma 35mm F1.4 dn Autofocus Performance

My main objection khổng lồ the original 35mm F1.4 ART lens was on the basis of its autofocus. I just didn’t find it reliable in important situations, like shooting weddings, & I ended up purchasing the much more expensive Canon 35mm F1.4L II instead because I needed a reliable option at this important focal length. But Sigma has come a long way from those days, và I’ve had little complain about in the autofocus department on any of the dn lenses. That’s certainly the case here, where the 35DN employs a STM (stepping motor) that seems to lớn have plenty of torque and smoothness, too. Part of the success here is due lớn having a single focus lens element, which means that the focus motor has less weight to lớn move, which results in smoother, faster focus action.

As a result, focus changes are essentially instantaneous and utterly silent. Even focus pulls during video clip are very snappy & I didn’t pick up any focus sound even using the on-board microphones on my Alpha 1. I’m not sure we can appreciate how good autofocus is today even compared to where we were a few years ago. One of the great mirrorless innovations is that gone are the days where the first thing I had to vày with a new lens that arrived on my door was run focus calibration to assure that I could get accurately focused results. Now I can get focus results lượt thích this right out of the box:

It goes without saying that Pet Eye AF works perfectly these days (here’s the obligatory Loki shot):

I did a brief portrait session with my youngest and had the expected result. Eye AF was locked in perfectly & I had one accurately focused result after another.

Out in the field, I was able to get accurately focused results in all situations. In the case of this very thin subject, focus immediately locked on và accurately focused:

I put on a ND1000 (ten stop) filter to get long exposure results midday. Autofocus didn’t slow down a bit, locking quickly & accurately.

I see no application where this lens wouldn’t provide satisfactory focus results. I give it very high marks for focus speed, precision, và smoothness/quietness of operation. Great stuff, Sigma!

Sigma 35DN Image Quality

There’s a good chance that if you’ve watched or read my reviews before, you’ve heard me discuss the challenge that lensmakers face as they weigh the tension between sharpness and quality of rendering. The dirty little secret of optical design is that it is often optical flaws, quirks, & imperfectly corrected aberrations that give lenses character. Sometimes the very process of carefully correcting every flaw causes a lens to thua thảm the character that endears it lớn photographers. The ineffable quality, that “special sauce” that is so hard to define but makes a lens special is so often found in lenses that aren’t technically perfect. Sigma has often tipped the scales towards the highly corrected kết thúc of the spectrum, & I’ve ironically accused some ART lenses of being rather “unartful” and a little clinical in their rendering. So where does the Sigma 35mm F1.4 DG dn ART fall on the spectrum?

Well, first of all, this is definitely a very highly corrected lens that is incredibly sharp across the frame even at F1.4. I used APS-C mode on my camera lớn get a little closer to Lok for this shot, và yet look just how incredibly sharp this shot is at F1.4.

Portrait photographers may in fact find the lens almost too sharp, as it will definitely show every skin detail when paired with a high resolution body. This portrait shot & crop are at F1.4:

Opinions vary, obviously, but I’m of the mind that I would prefer lớn reduce sharpness in post than try to showroom it. I’ll also chú ý that 35mm lenses will often be used for environmental portraits rather than closer ones like this, & having a lot of detail at F1.4 allows a portrait photographer khổng lồ capture full body, environmental portraits & keep the aperture at F1.4 rather than needing lớn stop down khổng lồ get max detail. This section will first detail the technical perfection of this lens và then see if it has been done at the cost of overall rendering.

First of all, let’s break down the vignette and distortion. There is a very mild amount of barrel distortion that I used a +3 khổng lồ correct for. Vignette is moderate at F1.4 at right under 2 stops. I fixed it with a +51 & slid the midpoint over lớn zero for a smooth, linear correction.

The vignette itself is fairly linear, so there will be plenty of situations where it will create a nice, natural frame for the subject. This shot, for example, is at F1.4 và without any correction of any kind.

Nothing significant here, & before long correction profiles will show up in editing software & make correcting these mild flaws even easier. You will receive corrections in camera for JPEGs and clip when using the lens.

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Let’s go back khổng lồ this high contrast, wide mở cửa shot of Loki bathed in bright window light. The angle of his head allows for a nice demo of Longitudinal Chromatic Aberrations (LoCA).

You can see that there is a bit of purple fringing before the plane of focus & some green fringing after the focal plane. This was the strongest example I saw in my tests, so I suspect this won’t be a real world issue for much of anyone.

LaCA (Lateral CA) is essentially perfectly corrected, with no apparent fringing khổng lồ the sides of the đen to white transitions.

The stage has been mix for some very high resolution results, so let’s get lớn the kiểm tra chart on the 50MP Sony Alpha 1 kiểm tra body. Here’s the chart:

We can see that resolution is fantastic across the frame with just the slightest bit of drop-off at the very edge of the frame. This is a near flawless performance in terms of resolution and contrast.

So is there more still in the tank? Absolutely, as it turns out. You can see even more punch at F2 relative lớn F1.4:

After this there is little change khổng lồ the center of the frame, but we see an uptick in corner contrast và resolution starting at F2.8.

The 35DN isn’t just optimized for portrait distances, too, as it is pin sạc sharp at F1.4 even for further distances.

So the resolution side of the equation is unequivocally solved. This is a brilliantly sharp lens in every facet. But how about that rendering? Does the incredible resolution undo the chất lượng of the rendering? That’s been the verdict I’ve been working on coming lớn over the course of my review.

I don’t think this lens has the epic creaminess of the Zeiss Milvus 35mm F1.4, & perhaps not even of the Canon 35L II that I’ve loved for years, but I vì think that somehow Sigma has done a pretty good job here of preserving a nice unique of bokeh despite the lens being so sharp & contrasty. The bokeh falloff here, for example, looks quite nice.

I’ve been able to vì chưng creative things with the bridge supports in this image, và foreground bokeh is in no way distracting.

Here’s one more photo showing bokeh falloff that gets ever-so-slightly busy at the end, but that’s just nit-picking.

Colors seems lớn be fairly neutral, with perhaps the slightest tendency towards being cool. I think saturation levels are nice, & I’m happy with what I’m getting out of the lens:

This is also a very high quality astro option, delivering crisp star points that have little comatic distortion even at the edge of the frame (third image in sequence).

This is one of the best performances I’ve ever seen from a wide aperture prime like this, and it only adds lớn the value of the lens.

I also saw nothing but good in the flare resistance from the lens. Even intense bursts of sun from behind the clouds on a partly cloudy day showed almost no loss of contrast và no ghosting artifacts.

The final image was the only shot I took that showed any kind of flare patterns, & it was mostly just a nice artistic bit of veiling in the background.

This is one of Sigma’s best lenses to lớn date optically, with many, many strengths, & very, very few flaws. Kiểm tra out the image gallery here lớn see more photos from the lens.


To return khổng lồ our early analogy, I bởi think that Sigma’s fourth 35mm lens on the Sony FE and Leica L platform is the “just right” option. The combination of reasonable size, affordable price, great, feature rich built, and amazing optical performance is going lớn be the “goldilocks” formula for many photographers. The idea of getting such a complete lens at a price point of $500 less than the new GM option is going lớn be an intriguing one, và I know a lot of photographers these days who essentially feel like their lenses choices are first buổi tiệc ngọt or a Sigma ART alternative. Sigma has done a rather masterful job of creating the market perception that their lenses are a viable (and professional!) alternative.

And that’s true here, to be sure. There is nothing not professional grade about the Sigma 35mm F1.4 DG DN. It has a unique build that is complete with the pro-grade features lượt thích weather sealing và features lượt thích the focus hold button along with aperture control options. It has fast, silent autofocus that seems khổng lồ be extremely reliable in my tests. It has a linear manual focus motor that will work just fine for video clip shooters. It has an exceptionally good optical performance that is almost too sharp…except the quality of the bokeh really is quite good.

All of this for around $900 USD is going lớn get a lot of photographers very interested, and, while some chose Sony’s 35mm F1.8 over the Sigma 35mm F1.2 doanh nghiệp because of the sheer size and price difference, the new 35mm F1.4 is going to put a very different kind of pressure on that buying choice because the size is less extreme, the optical performance so high, & the fact that there is less than $200 difference in price. I haven’t had a chance yet to thử nghiệm the new Sony 35mm F1.4 GM lens, and while I fully expect that lens to be very, very good, it will be hard pressed khổng lồ really outclass this new Sigma. I suspect that many photographers will find the Sigma 35mm F1.4 DG doanh nghiệp ART to lớn be the “just right” blend of price lớn performance.


Good build chất lượng complete with weather sealingStrikes a good balance of kích thước relative to lớn performanceAs feature rich as the GM seriesFast, quiet, accurate autofocusIncredibly sharp across the frameNice bokehGood resistance to lớn flareAberrations extremely well controlledVery good coma performanceAwesome price point


Too sharp?Larger và heavier than GM lens

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