Leica summicron-sl 50mm Asph or Sigma iserie 50mm f/2 dg dn

[Torpille]

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I'm looking for a 50mm for my SL 601.

I had the Panasonic 50mm f/1.8 which didn't completely convince me.

I don't want to take an 50Apo which is too heavy and bulky 

Does anyone have experience with the sigma Iserie 50mm f/2 dg dn?

I'm hesitating between the Leica sl 50 ASPH or the sigma Isérie 50mm f/2 dg dn.

I think the sl50 ASPH renders similarly to the Panasonic.

Will the Sigma work perfectly with the sl601?

Thank you for your feedback.

Edited February 9, 2024 by Torpille

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[Chris Nebard]

I don’t yet have the 50mm f2 Sigma but if it performs as well as their other i series lenses - and I’ve not read any reviews to say it’s inferior - then I know I would be happy. I have the Sigma 24mm f3.5, the 35mm f2 and the 45mm f2.8 (as well as Leica M lenses and 24-70 Leica VE to compare them with).  They are a joy to use on my SL2-s, the optical quality is very good and I like the results from them. I’m sure the 50  - and the others in this line - work just as well on the SL. But, by all means wait until you receive a bit more objective or better technical feedback if you need it: I’m a very biased, happy user of these lenses. Quality, price, performance, all overlap very nicely with them. 
Whatever you choose, enjoy! 

[schaffi]

I copare this two lenses on a SL2-S, the Sigma was sharper, the Bokeh was similar and little different colors.

A great benefit in my opinion is the aperture ring on the Sigma.

I use it now on Panasonic S5

https://www.flickr.com/photos/134578386@N06/albums/72177720307847845/

 

Edited February 9, 2024 by schaffi

[Abenteueranalog]

I have the Sigma 50/2 DG DN - before I used the 50/1.4 DG HSM so what I can say:
The lens has a really nice rendering and delivers great sharpness. In the corners you have a little lose in sharpness but - nothing you would really notice in real world conditions. Compared to the 50/1.4 DG HSM which is a great lens with a really nice look its noticeable sharper and better corrected. 
This Image is on the close focus point of the lens at f2. The point is on the snail shell (middle)
I also use (more often) the 35/2 DG DN and the 24-70 2.8 - all by themselfs are great lenses. And I use all of them on the 47mp of the SL2. So 

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Edited February 11, 2024 by Abenteueranalog

[huwm]

If you weren’t convinced by the Lumix S, I am but I prefer the Lumix lenses to Sigma generally, then I would go straight to the Sigma as I was not convinced by any real significant superiority of the ‘rebrands’ to the originals.