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Need help deciding between SIGMA 24-70mm F2.8 DG DN II and Leica 24-70 F...

  
 
theredkni463
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p.1 #1 · Need help deciding between SIGMA 24-70mm F2.8 DG DN II and Leica 24-70 F2.8 Vario-Elmarit-SL ASPH


I've been in the market to purchase a 24-70 one and done lens to use on my Leica SL2-S. I've came across these two lenses and having a really hard time deciding on which one to choose. I saw reviews and comparison on the first gen Sigma to Leica, but havent been able to find any comparison to the 2nd gen model. I am mainly looking for faster autofocus speeds as the SL2-S is a contrast based focus only has does sometime hunt for focusing and I wanted to do everything i could to help improve that. Does anyone have any experience or suggestions on which one to go?


Nov 29, 2025 at 06:13 PM
mak543
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p.1 #2 · Need help deciding between SIGMA 24-70mm F2.8 DG DN II and Leica 24-70 F2.8 Vario-Elmarit-SL ASPH


Unless you are Leica loyalist, get SIGMA 24-70mm F2.8 DG DN II. Faster AF motor and better image quality (in some situations) than the first gen Sigma and Leica versions.

There was a thread extensively compared Sigma 24-70 gen I vs II, probably in the Sony forum here if you want to try digging it up.



Nov 29, 2025 at 07:06 PM
RustyBug
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p.1 #3 · Need help deciding between SIGMA 24-70mm F2.8 DG DN II and Leica 24-70 F2.8 Vario-Elmarit-SL ASPH


I was just at a Sigma / Leica event ... same rep for both brands.

I was considering upgrading my SL2-S >>> SL3-S, and some other considerations. The rep was pretty keen on my getting a bundled package with a Leica zoom.

When it came to the subject of the Sigma vs. Leica ... I asked the rep for the difference on the Sigma 24-70 vs. the Leica. I was expecting a detailed answer, but instead got a one word response ... "Price".

I wound up getting the Siggy 24-70 / 2.8 DG DN II and have used it with my SL2-S and it is pretty snappy.
I was planning on looking at the Panny 24-60/2.8 but it wasn't in stock.

I've only had it for a week and a couple outings. Oh, and I did mount it on the SL3-S in the store (crappy in store lighting, etc.) and the AF difference was what I told the rep ... about 10-20% diff from the SL2-S. He was put off by my numbers a bit, suggesting the SL3-S was much better than that. My response was that in good lighting, it likely was, but in that scenario, it's what it was (imo).

I also tested the 70-200/2.8 and the 200/2 ... same diff's between the SL2-S vs. SL3-S when switching bodies (again, in crappy store lighting). I also tried the Panny 70-200/4 on both bodies. The Siggy's were all snappier than the Panny.

I mention this to suggest that I found the Siggy 24-70 lenses respectable on the SL2-S, so I pulled trigger on it. The aperture ring, and manual focus selector switch are bonuses for me (vs. the Leica). I never tried the Leica, so I don't know how it played, but the Siggy didn't "pi$$ me off" wrt to how it played on the SL2-S. If it had been a dog, I would have waited to try the Panny 24-60, instead.

In the real world, it's been fine outdoors. Indoor handball has been pretty good, maybe not SoCaNikon good, but again, it didn't "pi$$ me off", while using it. Did I have some "missed" shots ... sure, but that's hard to say how much it is me vs. the lens. Bottom line, I kept shooting it because it was working for me.

A few pics ... note, I do like to shoot the game with a "slow" shutter, to drag / invoke some of the motion / speed of the game. But, even with that you'll notice different areas that are "sharp" within the frame to give you a sense of what the lens can do wrt to focus / sharp. These are ISO 800 (might bump to 1600, next outing) around 1/250 sec or 1/400 sec.

I should also mention, I don't shoot AF-C ... AF-S only, so I can't speak to how the Siggy plays with AF-C.

Various distances, some at 24mm, others closer to 50mm, some crops for framing.

In time, I may upgrade to the SL3-S ... but, for now I'm giving this combo a ride, to go along with my M lenses, too.

HTH








































Nov 29, 2025 at 07:29 PM
theredkni463
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p.1 #4 · Need help deciding between SIGMA 24-70mm F2.8 DG DN II and Leica 24-70 F2.8 Vario-Elmarit-SL ASPH


Thank you so much for the very detailed insight and experience with the lens! I was really leaning towards the Leica 24-70 f2.8 as not only it looked really good/flush with the camera but only read reviews compairing the 1st gen siggy and not the 2nd gen. however, knowing that the 2nd gen autofocus is apparently 3x faster than the previous gen, it really made me debate rather to get the Leica or not as the Leica was known to be better than the 1st gen Siggy. It's also worth mentioning that a new 2nd Siggy is $1200 while a used Leica 24-70 is $1600 used. I'll look into the Siggy a bit more.

Additionally, just like yourself, I was maybe looking to save up money to upgrade my SL2-S to the SL3 or the SL3-S as it now has the phase detection but wasnt sure if that big of a price gap was worth it. I already took months to save up to buy my first Leica and debated wether i should've saved up a bit more to get the new one or not. It looks like from what youre saying, it may not be worth upgrading unless i REALLY need the extra 10-20 percent faster AF which i usually don't as i dont shoot sports.



Nov 29, 2025 at 10:28 PM
helimat
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p.1 #5 · Need help deciding between SIGMA 24-70mm F2.8 DG DN II and Leica 24-70 F2.8 Vario-Elmarit-SL ASPH


RustyBug wrote:
I was just at a Sigma / Leica event ... same rep for both brands.

I was considering upgrading my SL2-S >>> SL3-S, and some other considerations. The rep was pretty keen on my getting a bundled package with a Leica zoom.

When it came to the subject of the Sigma vs. Leica ... I asked the rep for the difference on the Sigma 24-70 vs. the Leica. I was expecting a detailed answer, but instead got a one word response ... "Price".


Hey Kent, sorry but I feel the need to push back on the answer provided by the Sigma Rep a little..... There are more than the price that separates them IMO. Weather sealing is a big one.... As well as there is reportedly tighter tolerances and better coatings for the SL versions. While I can't provide a link to back that up, I can say I have owned both the L Mount Sigma 100-400 & the Leica SL 100-400, and there is a discernible difference in IQ between the two. Is it worth the price difference? Well, that is up to the end user to decide. And it is likely more obvious on the 60mp SL3, might not be noticeable on a lower resolution body I suppose.

That being said, there are positives to the Sigma variants, as you mentioned the function switches, aperture rings, and one you missed; All-up weight! As well as the price of course. A real gem is the Sigma 28-70, (And it's Leica SL version) tiny, sharp, and wonderful micro-contrast & colour.





Dec 03, 2025 at 12:12 PM
theredkni463
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p.1 #6 · Need help deciding between SIGMA 24-70mm F2.8 DG DN II and Leica 24-70 F2.8 Vario-Elmarit-SL ASPH


It's funny you actually brought up the 28-70 sigma and leica versions while i was looking for the 24-70s. I was actually looking into maybe getting them also as I heard good reviews on it. Do you own any of the 28-70 lenses? and if so, what are your personal experience with the lens? I do love an extra portability and money being saved but again, im looking for AF performance and wanted to see if there was a difference between the 28-70 and the 24-70.


Dec 03, 2025 at 01:12 PM
 


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flash
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p.1 #7 · Need help deciding between SIGMA 24-70mm F2.8 DG DN II and Leica 24-70 F2.8 Vario-Elmarit-SL ASPH


helimat wrote:
Hey Kent, sorry but I feel the need to push back on the answer provided by the Sigma Rep a little..... There are more than the price that separates them IMO. Weather sealing is a big one.... As well as there is reportedly tighter tolerances and better coatings for the SL versions. While I can't provide a link to back that up, I can say I have owned both the L Mount Sigma 100-400 & the Leica SL 100-400, and there is a discernible difference in IQ between the two. Is it worth the price difference? Well, that is up
...Show more

Unfortunately your logic doesn’t extend to the 24-70’s. While the 100-400’s (and 28-70) do have some build differences (the Sigma is a basic contemporary lens) the 24-70ii Sigma is fully weather sealed and built extremely well. It’s part of their top tier art series.

I have a good copy of both the Sigma and Leica 100-400 and they’re optically identical. I did return my first copy of the Leica as it was no good. I suspect your Sigma i worse due to copy variation as my original Leica was. Both copies I have now are extremely good and very even across the whole imaging plane. They work well with TC’s. I do agree that the Leica is much better weather sealed and I generally carry the Leica variant as a result. This does not extend to the 24-70’s

There is no reason to purchase the Leica 24-70 over the Sigma V2. The Sigma is optically better, smaller, lighter, has faster AF and has the same build quality.

I found the 28-70 disappointing. I have the Leica version. It’s not that sharp wide open, even in the centre and even stopped down never gets to the detail level of the Sigma 24-70ii at any aperture. I was hoping for something decent and small as a travel lens. This is not it.

I have most of the Leica standard zooms (28-70, 24-70 and 24-90) plus both versions of the SIgma 2.8 (24-70 v1 and 2). If you’re not prepared to carry the weight of the 24-90 then the Sigma 24-70ii is by far the best option. There’s also the 24-105 options from Sigma and Panasonic. Both are very, very good.

Gordon



Dec 03, 2025 at 05:07 PM
helimat
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p.1 #8 · Need help deciding between SIGMA 24-70mm F2.8 DG DN II and Leica 24-70 F2.8 Vario-Elmarit-SL ASPH


flash wrote:
Unfortunately your logic doesn’t extend to the 24-70’s. While the 100-400’s (and 28-70) do have some build differences (the Sigma is a basic contemporary lens) the 24-70ii Sigma is fully weather sealed and built extremely well. It’s part of their top tier art series.

I have a good copy of both the Sigma and Leica 100-400 and they’re optically identical. I did return my first copy of the Leica as it was no good. I suspect your Sigma i worse due to copy variation as my original Leica was. Both copies I have now are extremely good and very even across
...Show more

I was referring to what the rep said about the lens models for which there is a Sigma and a Leica version, such as the 24-70, 28-70 and 100-400, so your logic on the Sigma 24-70 II does not apply to what I said. Although I am sure it is very good lens and an excellent option.

Perhaps there is a copy variation issue with your 28-70 as well, as I have used both the Sigma & Leica versions and they were both excellent from wide open, which the Leica having a slight edge. But I agree, the Lumix 24-105 is also excellent, does 0.5 macro to boot. But it is large for a f/4 lens.

That being said, what I didn't get to saying is that at new prices I would opt for the Sigma versions of any of the lenses, as I believe the difference in price brand new is not worth the difference in quality. However at second hand prices the delta is less, which is why I how I ended up with a few on the SL versions. My point was the rep wasn't being truthfull, IMO, even if putting IQ aside.



Dec 03, 2025 at 08:05 PM
RustyBug
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p.1 #9 · Need help deciding between SIGMA 24-70mm F2.8 DG DN II and Leica 24-70 F2.8 Vario-Elmarit-SL ASPH


helimat wrote:
Hey Kent, sorry but I feel the need to push back on the answer provided by the Sigma Rep a little.....


Hey Mat, no apologies needed.

Maybe he was just tired from a long day at the event. Bear in mind, this is also the Leica rep. And, by that, I mean he actually was part of the buildout for the Leica display, etc. bringing Leica officially into this store. So, it's not like it was just a Sigma rep, not feeling up to the $$$ difference of Leica.

But, I was a bit surprised by brevity of his response.



Dec 03, 2025 at 11:39 PM
flash
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p.1 #10 · Need help deciding between SIGMA 24-70mm F2.8 DG DN II and Leica 24-70 F2.8 Vario-Elmarit-SL ASPH


helimat wrote:
I was referring to what the rep said about the lens models for which there is a Sigma and a Leica version, such as the 24-70, 28-70 and 100-400, so your logic on the Sigma 24-70 II does not apply to what I said. Although I am sure it is very good lens and an excellent option.

Perhaps there is a copy variation issue with your 28-70 as well, as I have used both the Sigma & Leica versions and they were both excellent from wide open, which the Leica having a slight edge. But I agree, the Lumix 24-105
...Show more

The original Sigma 24-70 was also an Art lens. The SL 24-70 is a re-house of that lens. Aside from some sample variation they were esssentially identical. Optically and build wise. It's only when Leica re-house a Contemporary lens that there's improvements to the build and weather sealing (28-70 and 100-400). Art lenses see no improvement. But after testing all of them and owning most of them I've found no differences apart from sample variation. In each case the Leica was worse.People say there's different coatings and superior (smaller) sample variation on the Leica side. I have found that to be completely false. After all Sigma makes all of these Lenses for Leica. They're all made completely in the Sigma factories in Asia.

I've tried several copies of the 28-70. Sigma and Leica, after I bought my Leica copy. Unfortunately they've all been about the same. The 24-70ii and 24-90 are noticeably superior optically than that lens.

Gordon



Dec 04, 2025 at 01:58 AM
helimat
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p.1 #11 · Need help deciding between SIGMA 24-70mm F2.8 DG DN II and Leica 24-70 F2.8 Vario-Elmarit-SL ASPH


flash wrote:
The original Sigma 24-70 was also an Art lens. The SL 24-70 is a re-house of that lens. Aside from some sample variation they were esssentially identical. Optically and build wise. It's only when Leica re-house a Contemporary lens that there's improvements to the build and weather sealing (28-70 and 100-400). Art lenses see no improvement. But after testing all of them and owning most of them I've found no differences apart from sample variation. In each case the Leica was worse.People say there's different coatings and superior (smaller) sample variation on the Leica side. I have found that to
...Show more

Good talk



Dec 04, 2025 at 10:02 AM
helimat
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p.1 #12 · Need help deciding between SIGMA 24-70mm F2.8 DG DN II and Leica 24-70 F2.8 Vario-Elmarit-SL ASPH


RustyBug wrote:
Hey Mat, no apologies needed.

Maybe he was just tired from a long day at the event. Bear in mind, this is also the Leica rep. And, by that, I mean he actually was part of the buildout for the Leica display, etc. bringing Leica officially into this store. So, it's not like it was just a Sigma rep, not feeling up to the $$$ difference of Leica.

But, I was a bit surprised by brevity of his response.


Gotcha. I would be surprised too!



Dec 04, 2025 at 10:06 AM







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