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Review: Sigma 85mm f/1.4 DG Art Series Lens

Eldar said:
Larsskv said:
TWI by Dustin Abbott said:
Oddly enough I have enough issues calibrating a copy of the 35L II (yes, I was shocked too!) that I purchased at the beginning of the year that I was about to return it. I did one last AFMA, got a new value, and that seems to be working. I had run AFMA about six times previously (multiple times per test), and hadn't gotten this value. Sometimes a new lens almost seems to need a bit of a break in period.

I remember that Eldar also said his 35LII had problems with the AF at first, but suddenly was perfectly fine. Odd!
Yes, that´s correct. I struggled quite a bit to get it right with the 35L II. I even sent it to CPS, twice, to figure out what was wrong, but they said everything was fine. So I continued to try and as Dustin experienced, I retried FoCal a number of times, tested real life shooting at different distances and suddenly I got it right. A weird experience, but It has been working well ever since, so, apart from all the time spent on calibration, I can´t complain.

That's very interesting. I didn't have that issue with my review copy at all, but I was just about to give up on my own copy and have it replaced, but it seems to be focusing well at a +1, which is surprising as I wasn't getting consistent results at AFMA points all around that.
 
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TWI by Dustin Abbott said:
..........

I suspect that at least part of the reason (speaking as a reviewer) is that doing AFMA calibration on lenses is time consuming, and that is many times over as true when a lens requires calibration at different focus distances (using the Sigma USB dock) to achieve accurate focus. I get rather weary just thinking about doing it sometimes.

Sigma's USB dock is a utter pain. You have to keep taking it off the camera and putting it on the dock. Then back to the camera.. LOL.. Nah.. I am selling mine.. I rather go apple bobbing in a bucket of salt..
I often use FoCal at first and see how it performs and let it set it in camera. Then I do my own test at the distance I will be using and see if I need to bump it up or down a notch. But really DP review could have did this in 20 mins, even if they did it manually.


@Larsskv
Speaking of their AF test. Yea I caught that too. They didn't use PDAF. :-/ So IMHO this makes their AF test results invalid for any DSLR shooter. Case in point my 18-35mm Art works perfect in Live View and on a mirrorless body. However using Phase Detect it will not focus correctly at all.

IMHO I will pass. For the price, no IS, no form of weather sealing.. The fact that most will shoot at about f/2.8 anyway.. Makes the Tamron look like a much better buy for a portrait photographer.
 
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Most people thought I was a bit crazy when I claimed new lenses adapt to the camera better and better after a while, I haven't looked for a reason why, just accepted that it is that way.

Had the same thing with all new lenses and bodies ;)
 
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Viggo said:
Most people thought I was a bit crazy when I claimed new lenses adapt to the camera better and better after a while, I haven't looked for a reason why, just accepted that it is that way.

Had the same thing with all new lenses and bodies ;)

I've become a believer. I had similar focus results across 6D bodies, but then had more work in calibrating existing lenses when moving to the 5D Mark IV. Once everything is dialed in, though, I get even better focus results. It just takes longer to get there.
 
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TWI by Dustin Abbott said:
Viggo said:
Most people thought I was a bit crazy when I claimed new lenses adapt to the camera better and better after a while, I haven't looked for a reason why, just accepted that it is that way.

Had the same thing with all new lenses and bodies ;)

I've become a believer. I had similar focus results across 6D bodies, but then had more work in calibrating existing lenses when moving to the 5D Mark IV. Once everything is dialed in, though, I get even better focus results. It just takes longer to get there.

100% agreed, at least I'm not crazy ;D
 
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1. Sigma 85 F1.4 Art comes with weather sealing at the mount. Just so that you are aware.
2. Tamron lens is also dock calibrated = hassle.. no good then? :)

3. what else apart from IS makes Tamron 85 F1.8 VC a better lens? :) smaler, lighter, cheaper a bit? yep. it is. I did shoot with both of these lenses side by side for a test. conclusion: I am sorry, but one has to be blind to not detect performace difference. Tamron is good all rounder lens. no question about it. Not a spectacular lens, not a champion.

ExodistPhotography said:
TWI by Dustin Abbott said:
..........

I suspect that at least part of the reason (speaking as a reviewer) is that doing AFMA calibration on lenses is time consuming, and that is many times over as true when a lens requires calibration at different focus distances (using the Sigma USB dock) to achieve accurate focus. I get rather weary just thinking about doing it sometimes.


IMHO I will pass. For the price, no IS, no form of weather sealing.. The fact that most will shoot at about f/2.8 anyway.. Makes the Tamron look like a much better buy for a portrait photographer.
 
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Alex_M said:
1. Sigma 85 F1.4 Art comes with weather sealing at the mount. Just so that you are aware.
2. Tamron lens is also dock calibrated = hassle.. no good then? :)

3. what else apart from IS makes Tamron 85 F1.8 VC a better lens? :) smaler, lighter, cheaper a bit? yep. it is. I did shoot with both of these lenses side by side for a test. conclusion: I am sorry, but one has to be blind to not detect performace difference. Tamron is good all rounder lens. no question about it. Not a spectacular lens, not a champion.

Less CA, better real world contrast, softer, less busy bokeh highlights, better minimum focus distance and maximum magnification, full weather sealing.

The ART lens has [slightly] more sharpness at wide apertures (though the Tamron has [slightly] more sharpness stopped down), the ART has better vignette performance, and I think a slightly more nuanced handling of light falloff in the studio.

They are both excellent lenses for people with different sets of shooting priorities. I don't get why people have to bash one lens to praise the other.

As for "having to be blind to not detect performance difference", I would encourage you to look at this: https://www.dxomark.com/Lenses/Compare/Side-by-side/Sigma-85mm-F14-DG-HSM-A-Canon-on-Canon-EOS-5DS-R-versus-Tamron-SP-85mm-F18-Di-VC-USD-Model-F016-Canon-on-Canon-EOS-5DS-R__1776_1009_1685_1009.

It mirrors my own findings, save that DXO's chart test misses the real world CA issue for the ART lens in more difficult lighting. The Art lens resolves 2 more megapixels (40 vs. 38) and lets in .2 stop more light despite its aperture advantage and massive front element (1.8 T stop vs 2 T stop). I would argue that you would have to have incredibly good sight to notice the sharpness difference in real world shooting.

Here's a crop from my own test...I must be blind. The Sigma 85 ART is a fantastic lens...but to argue that the Tamron is not is to ignore the evidence.
 

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michi said:
I just wish I knew when the new Canon 85mm will be released. I'm looking for a excellent portrait lens in this range. My Canon 85 1.8 is just too soft. If the new Canon is under $1500 I would purchase it if it is as good as most of the new Canon lenses. Otherwise I would try the Sigma.

$1,800+
 
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