LensTip tests the brand new Sigma 85mm f/1.4 Art - sharpest lens ever :-)
- Thread starter alek35
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Thank you Alek and Alex.
Hmm..this looks good fordeep medium(?) sky astrophotography if the coma is well-corrected. And for other uses, as an enthusiast, I can probably live with inconsistent AF.
Hmm..this looks good for
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Autofocus Performance (reported greatly improved):
http://www.optyczne.pl/410.10-Test_obiektywu-Sigma_A_85_mm_f_1.4_DG_HSM_Autofokus.html
Sharpness:
"...the previous record belonging to the resolution Otus 1.4 / 28 tested Sigma beat on each of the next three checked our stops, or f / 2.0, f / 2.8 and f / 4.0. Formally, the highest score was achieved at f / 2.8, and it amounts to 49.7 ± 0.4 lpmm, which is our new high-resolution matrix EOS 5D Mark III.... Chart leaves no illusions. Undoubtedly the sharpest optics on the market in its class, it does now Sigma...."
Coma (very low):
http://www.optyczne.pl/410.7-Test_obiektywu-Sigma_A_85_mm_f_1.4_DG_HSM_Koma__astygmatyzm_i_bokeh.html
Google web page translation Polish to English worked well for me.
"...
To make sure of our results, we conducted two additional tests similar to those we do in testing devices. We set Sigma EOS-5D Mark III em in front of one of our tables and aperture of f / 2.8 we made 50 pictures by setting sharpness each time anew. Footage of exemplary focus was 59%, photos with errors less than 20% of the maximum MTF50 was 39%, and shots that can be considered a miss only 2%.
Then he raised the bar even higher and repeated the experiment, but at f / 1.4. Interestingly, the results were even better. A fully successful shots was 75%, acceptable 23% and 2% again unsuccessful..."
Low Light Performance:
"... As for these inferior light conditions in conjunction with Sigma 5D Mark III it seems to work well compared to the competition. During the session in the studio, when we turned off the light modeling, and it got pretty dark, Sigma focus was setting virtually every time without any search. Under the same conditions set Nikon D3x with a new Nikkor AF-S 105mm f / 1.4 has underperformed, often repeatedly passing correct focus point and having problems with its setting.."
P.S. seems quite conclusive to me.. Order placed. Total: AUD$1,135.00 (USD850.00)
http://www.optyczne.pl/410.10-Test_obiektywu-Sigma_A_85_mm_f_1.4_DG_HSM_Autofokus.html
Sharpness:
"...the previous record belonging to the resolution Otus 1.4 / 28 tested Sigma beat on each of the next three checked our stops, or f / 2.0, f / 2.8 and f / 4.0. Formally, the highest score was achieved at f / 2.8, and it amounts to 49.7 ± 0.4 lpmm, which is our new high-resolution matrix EOS 5D Mark III.... Chart leaves no illusions. Undoubtedly the sharpest optics on the market in its class, it does now Sigma...."
Coma (very low):
http://www.optyczne.pl/410.7-Test_obiektywu-Sigma_A_85_mm_f_1.4_DG_HSM_Koma__astygmatyzm_i_bokeh.html
Google web page translation Polish to English worked well for me.
"...
To make sure of our results, we conducted two additional tests similar to those we do in testing devices. We set Sigma EOS-5D Mark III em in front of one of our tables and aperture of f / 2.8 we made 50 pictures by setting sharpness each time anew. Footage of exemplary focus was 59%, photos with errors less than 20% of the maximum MTF50 was 39%, and shots that can be considered a miss only 2%.
Then he raised the bar even higher and repeated the experiment, but at f / 1.4. Interestingly, the results were even better. A fully successful shots was 75%, acceptable 23% and 2% again unsuccessful..."
Low Light Performance:
"... As for these inferior light conditions in conjunction with Sigma 5D Mark III it seems to work well compared to the competition. During the session in the studio, when we turned off the light modeling, and it got pretty dark, Sigma focus was setting virtually every time without any search. Under the same conditions set Nikon D3x with a new Nikkor AF-S 105mm f / 1.4 has underperformed, often repeatedly passing correct focus point and having problems with its setting.."
P.S. seems quite conclusive to me.. Order placed. Total: AUD$1,135.00 (USD850.00)
chrysoberyl said:
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Alex_M said:
It does sound nice. Personally, I don't mind the weight. So the remaining question is product consistency. I am trying very hard to temper my desire to order this lens! But I trust LensTip greatly, so I feel I am grasping at straws. OK, I will wait for LensRentals (known for quality evaluations here in the states) to review this lens.
Thanks for the additional information.
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The Petapixel test did a comparison between the Sigma 85 Art, the Canon 1.8 & 1.2, the Nikon 1.4, Samyang T1.5, Tamron 1.8 and Sony 1.4. I really thought they should've put the old Sigma 85 in instead of the Samyang.
Just judging from the pics Nikon was the sharpest wide open. At 1.8 the Nikon and Sigma are pretty much the same. At 2.8 everything is pretty much indistinguishable.
Even wide open, though, the much smaller, lighter and cheaper Tamron did pretty well. It definitely wasn't as sharp but, as was noted in the comments, nothing likely to make/break a photo
Just judging from the pics Nikon was the sharpest wide open. At 1.8 the Nikon and Sigma are pretty much the same. At 2.8 everything is pretty much indistinguishable.
Even wide open, though, the much smaller, lighter and cheaper Tamron did pretty well. It definitely wasn't as sharp but, as was noted in the comments, nothing likely to make/break a photo
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Sir, I don't think we looking at the same lens 
I dont suppose you implied that nikon 85 lens is as good as Otus or Sigma. Tamron is an OK lens. Not in the same league though. Here is what Lenstip had to say about the Sigma 85 Art:
"... I imagine Zeiss must gnash their collective teeth quite strongly. They invented the Otus series which was supposed to prove that, for a quite astronomical price, you can produce an optically outstanding lens practically without any flaws. Meanwhile Sigma presented their 85 mm device which is not only able to win a duel with the Otus 1.4/85 in the most important categories but also breaks the resolution record of the Otus 1.4/28 on the sensor of the Canon EOS 5D Mark III. Mind you it is over three times cheaper. Nothing to add I suppose – a fully deserved the Lenstip Editor’s Choice award..."
I dont suppose you implied that nikon 85 lens is as good as Otus or Sigma. Tamron is an OK lens. Not in the same league though. Here is what Lenstip had to say about the Sigma 85 Art:"... I imagine Zeiss must gnash their collective teeth quite strongly. They invented the Otus series which was supposed to prove that, for a quite astronomical price, you can produce an optically outstanding lens practically without any flaws. Meanwhile Sigma presented their 85 mm device which is not only able to win a duel with the Otus 1.4/85 in the most important categories but also breaks the resolution record of the Otus 1.4/28 on the sensor of the Canon EOS 5D Mark III. Mind you it is over three times cheaper. Nothing to add I suppose – a fully deserved the Lenstip Editor’s Choice award..."
e_honda said:
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Sales may be difficult to judge, but on paper the only thing the 85L II seems to have going for it is its ability to shoot @ f/1.2. In some areas the 85L II gets crushed by the new Sigma. With a 5DS/R I expect the 85mm ART will shine like a diamond.j-nord said:
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The initial results we're seeing look great, but I'd like to see identical shots made with the 85L II and the Sigma 85 Art, especially with a focus on bokeh quality. I had the 35 Art and have had the 50 Art for a while and in my experience, the bokeh from the Art series is simply NOT up to the level of the lauded Canon L glass. I also have to assume Zeiss' bokeh is substantially better as well. It's unfortunate that there's no way to "measure" bokeh. The only way I can describe the Art series bokeh (at least the two lenses I've used) is that occasionally, it looks "textured" or "crunchy". IF this lens eliminates that problem, I would happily sell my 85L II for it.
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The Art bokeh looks a bit "nervous" at times that's due to elevated micro contrast levels in the bokeh areas. I was able to replicate the look by adjusting micro contrast of images taken by non Art lenses. According to Lenstip, new Sigma lens is much improved in that regard.
that's due to elevated micro contrast levels in the bokeh areas. I was able to replicate the look by adjusting micro contrast of images taken by non Art lenses. According to Lenstip, new Sigma lens is much improved in that regard. jebrady03 said:
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Great performance indeed. Still a non-starter in my studio unless AF consistency is proven to be fixed. Sigma can make very sharp lenses, but until AF consistency is completely solved and become a distant memory, their lens sales will never reach their potential.
-pw
-pw
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