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Sigma 35mm 1.4 DN L Mount


Peters
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Hi everyone - was wondering if anyone has had experience with using a sigma 35mm DN 1.4 (mirrorless version) recently on a Leica SL2 or SL2-S. I am most interested in autofocus performance - I understand that it was a little slow when it first came out but firmware updates since then may have improved things. 

 

Thanks

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I use the 35mm DN f/1.4 on the SL2 and Sl2s, I do mostly landscape, travelling and use it when there is limited light, I never noticed that the autofocus system is too slow, it's not a lens you use for sports or birds in flight. Where do you want to use the lens for?

ps wide open it's pretty good

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vor 3 Stunden schrieb Peters:

Street mostly, and at night. Sounds like it's good enough?

Not sure... The AF is quite snappy in good light, but slower than the Panasonic 50 1.8 by a significant margin. For street photography I would clearly prefer the lighter, smaller and probably much faster Panasonic 35 1.8.

However, the 35 1.4 DG DN is definitely not a slow focusing lens. At least, it was able to track a bride and a groom walking slowly up the stairs against a very bright background. Almost 100% tack sharp photos. See example below.

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I think this lens is pretty good AF wise now and with the Eye AF update my SL2s is pretty snappy, no it's not A1 35mm GM fast but for most things it's more than good enough.

My 35 SL SPO is now gone and I ended up with a Q2R and the 35mm M APO instead, I really like the Sigma and it's a 1.4 as well of course - it's easily 95% of the SL35 APO and in 99% of cases you can't tell the difference at f2.

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On 6/14/2022 at 2:40 PM, huwm said:

How much better is it than the f2?

Just thinking of the increase in size and weight and wondering if I can justify it, definitely not considering the 1.2!

I got it for a little to test next to my App SL 35.

at F2 the images where hard to tell apart .

Added bonus of 1.4. It does have little CA.

I still have the App-SL 35. it can do MF a bit better then sigma. Some sigma lenses give the battery problems on the SL2.

But the Sigma is a valid choice. 

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From my point of view I'd say that the 35mm APO is slightly faster but it's nosier and 'pulses' a bit more, the new eye AF feature though certainly helps.

Equally I do prefer Sigma's approach of having an aperture ring, IQ and AF wise the 35mm APO is better but not by very much now in my view. From memory they weigh about the same & really the AF speed advantage the SL lens has is marginal. I've also been impressed by the build quality.

The Leica 'magic' also seems to make their f2 APO's behave like 1.4's in some circumstances so there's not much of difference here but it goes to the Sigma for a true 1.4 but the margins are as narrow as the AF performance ones.

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On 6/14/2022 at 6:27 AM, FrankX said:

Not sure... The AF is quite snappy in good light, but slower than the Panasonic 50 1.8 by a significant margin. For street photography I would clearly prefer the lighter, smaller and probably much faster Panasonic 35 1.8.

However, the 35 1.4 DG DN is definitely not a slow focusing lens. At least, it was able to track a bride and a groom walking slowly up the stairs against a very bright background. Almost 100% tack sharp photos. See example below.

On the Panasonic S5, the 50mm f1.8 focuses pretty fast, but strangely, the Panasonic G9 with focuses noticeably faster with the Olympus 25mm f1.2 Pro. So if the Sigma 35mm f1.4 focuses slower than the Panasonic 50, it does make me wonder about the Sigma's AF speed. I wish I could rent the Sigma for a weekend.

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