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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 20 Aug 2013 (Tuesday) 21:22
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Sigma Stigma

 
GuitarDTO
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Aug 21, 2013 16:31 |  #16

IMAGE: http://www.reactiongifs.com/wp-content/uploads/2011/11/mj_popcorn.gif

Gear: 5D3, 135L, Sigma 35, 50 1.8 STM, 16-35 F/4L IS, 85/1.8, Fujifilm X100T
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badams
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Aug 21, 2013 20:15 |  #17

I love my two Sigma lenses, 150mm macro and 10-20mm.


Everyday use: 7D2, 1.4x v3 Canon TC (sometimes the 2x v2 Canon TC), Canon 500mm f4 L IS USM; 6D, 24-105L
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Mornnb
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Aug 22, 2013 05:04 |  #18

The problem with Sigma is not the optics, their optics is frequently as good as L lenses.
The problem with Sigma is Canon. The autofocus protocols are not published so Sigma has to reverse engineer them, and doesn't always get it right.


Canon 5D Mark III - Leica M240
EF 16-35mm F/4 IS L - EF 14mm f/2.8 L II - - EF 17mm TS-E L - EF 24-70mm f/2.8 L II - EF 70-200mm IS II f/2.8 L - Sigma 35mm f/1.4 Art - Sigma 85mm f/1.4 EX
Voigtlander 15mm III - 28mm Elmarit-M ASPH - 35mm f/1.4 Summilux-M FLE - 50mm f/1.4 Summilux-M ASPH
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DC ­ Fan
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Aug 22, 2013 08:57 as a reply to  @ Mornnb's post |  #19

Images generated by Sigma lenses.

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kfreels
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Aug 22, 2013 12:26 |  #20

Sirrith wrote in post #16226669 (external link)
That is because there are many more Canon fanboys than people who actually look at the pros and cons of lenses from different manufacturers before making a decision to buy.

The lens you are looking at for example, is better in its Sigma form. It is not, however, problem-free. The Sigma 50/1.4 has a higher than average chance of having focus issues. These can, however, often be fixed by sending it in for calibration under warranty (free save for shipping). The Canon 50/1.4 suffers from softness and CA wide open, has very nervous bokeh, and a weak - sometimes inconsistent and inaccurate as well - AF mechanism prone to breaking which will not be fixed under warranty if it happens outside the 1 year warranty period.

Right on spot here. And to add to this, your shipping cost to MAYBE get it calibrated is still considerably lower than the price of the Canon.

I especially like to make fun of people that have to zoom in to 100% to see a difference in IQ and then will shell out an extra $1000 for the improvement when they never print anything any larger than 11x14 IF that.


I am serious....and don't call me Shirley.
Canon 7D and a bunch of other stuff

  
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artyH
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Aug 22, 2013 13:40 |  #21

I have the Sigma 50F2.8 macro lens. AF is slow, but it does have focus limiter which helps somewhat.
This is the nature of the beast for a macro lens without USM.
The lens is sharp and goes to 1:1, but the comparable Canon 50 F2.5 only goes to 1/2 life size.
That is why I got the Sigma.
I prefer Canon color rendition, but you can't really generalize about Sigma. I have never heard complaints about their macro lenses, but some buyers and reviewers(Photozone) have complained about AF difficulties with the AF on the Sigma 50F1.4. According to Photozene, there is too much spherical aberration. This results in focus shift, which also can be found in some Canon lenses.




  
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CyberDyneSystems
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Aug 22, 2013 14:35 |  #22

Mostly the "Stigma" has always been unwarranted, misinterpreted and blown out of proportion,. ... but now it's just plain out of date.


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marcosv
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Aug 22, 2013 14:51 |  #23

In the past, potential AF issues --- inaccurate AF across difference focus distances and camera bodies; incompatibility with newer DSLR bodies.

I tried two copies of the Sigma 50/1.4 with my two FF DSLR bodies. With both copies, AF accuracy wasn't good enough on both bodies. AF changed a bit very close versus farther from the subject.

But, with the new Sigma ART lens and that USB based docking station to reprogram the lens with different MAF values for different distances, I expect all of those issues will go away.


EOS-M | 40D | 5DII | 5DIII | EF-M 22 | EF-M 18-55 | 10-22 | 17-55 | 17-40L | 24-70L mk II | 24-105L | 70-200/2.8L IS mk II| 35L | 85L II |35/2 | 40/2.8 pancake | 50/1.8 | 50/1.4 | 100/2 | Rokinon 14/2.8 | 90 EX | 270 EX II | 580 EXII | 600 EX-RT

  
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sportmode
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Aug 22, 2013 15:44 as a reply to  @ marcosv's post |  #24

I think Sigma realizes they can't get Canon's secret sauce for AF, so the only way to get around that is with the docking station. I've gone through 3 Sigs -- the 30/1.4 AF was never spot on even after sending it in (no longer own it), the 12-24mm I resort to using manual focus, and the 35/1.4 AF was all over the place and it was returned after a week (the docking station was not out at that time). That said, I like where they're going with the new lenses, but I would only purchase another Sigma if it had AF calibration support.


5D Mark III, 6D, EOS-M 22mm f/2 | 24-70mm f/2.8L II | 50mm f1.4 | 100L | 70-200mm f/2.8L IS II | Rokinon 8mm Fisheye

  
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marcosv
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Aug 22, 2013 17:23 |  #25

sportmode wrote in post #16231284 (external link)
I think Sigma realizes they can't get Canon's secret sauce for AF, so the only way to get around that is with the docking station. I've gone through 3 Sigs -- the 30/1.4 AF was never spot on even after sending it in (no longer own it), the 12-24mm I resort to using manual focus, and the 35/1.4 AF was all over the place and it was returned after a week (the docking station was not out at that time). That said, I like where they're going with the new lenses, but I would only purchase another Sigma if it had AF calibration support.

Just to confirm: you've tried the new Art version of the Sigma 35? But, not with the docking station to tweak autofocus?


EOS-M | 40D | 5DII | 5DIII | EF-M 22 | EF-M 18-55 | 10-22 | 17-55 | 17-40L | 24-70L mk II | 24-105L | 70-200/2.8L IS mk II| 35L | 85L II |35/2 | 40/2.8 pancake | 50/1.8 | 50/1.4 | 100/2 | Rokinon 14/2.8 | 90 EX | 270 EX II | 580 EXII | 600 EX-RT

  
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NCSA197
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Aug 22, 2013 20:46 |  #26

Wanting a faster lens than the kit that came with my T3i, I very nervously ordered the Sigma 17-50/f2.8. Thirty years ago you simply NEVER considered Tamron, Sigma; anything other than "name brand" optics. Fast forward to today, and the Sigma is an outstanding lens. AF works well, quiet, fast enough that it doesn't limit me at all. The worst I can say is it might be a little heavy. I'll be ordering the 50-150 soon. Great sharpness, and it performs well. It's worth very strong consideration.


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brettjrob
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Aug 22, 2013 21:31 |  #27

Even Sigma fans would have to agree that, at least in the past, many of their lenses had a distinct color cast -- in my experience, it would sometimes be almost impossible to make the colors look identical to Canon's even in PP. It's quite possible that has changed, as I haven't purchased a Sigma lens in 6-7 years now.

To me, though, color rendition was the area in which I found it fair to generalize the entire brand. Multiple Sigma lenses had the same general "look" to them, and it was distinct from the color rendition of several Canon lenses I used of differing quality and price points.

My preference was strongly in favor of Canon color rendition, but that is, of course, quite subjective.


Nikon D610, D5100
Samyang 14/2.8 | Nikon 18-35G, 24-85G VR, 70-200/4G VR

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johnandbentley
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Aug 22, 2013 21:45 |  #28

I kinda had the same feeling as OP, and even owned a sigma 28-70 f2.8 before and between lens creep and soft wide open images, I kind of swore off going down that road again. That said, I sprang for the new Sigma 70-200 f2.8 OS and I must say I love it more than experience with previously owned canon 70-200 f4L, and borrowed many times canon 70-200 f2.8 IS version i. It is built well, AF works plenty fast for me and above that, the colors, bokeh and overall IQ in my humble opinion are canon L caliber. Sigma has been improving for sure.


6D, Sigma 24mm f1.4 art, sigma 85 f1.4 art

  
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sportmode
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Aug 23, 2013 00:12 |  #29

marcosv wrote in post #16231531 (external link)
Just to confirm: you've tried the new Art version of the Sigma 35? But, not with the docking station to tweak autofocus?

That's right. The docking station was not out at that time. Just to be fair, I tried the 35L shortly after, and AF was dead on with it, but it failed to impress me with sharpness, so I gave up on the 35 focal length, bit the bullet and recently went for broke with the 24-70L II.


5D Mark III, 6D, EOS-M 22mm f/2 | 24-70mm f/2.8L II | 50mm f1.4 | 100L | 70-200mm f/2.8L IS II | Rokinon 8mm Fisheye

  
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