August 17, 2017, 10:12:15 AM

Author Topic: Sigma Warns of Lens Aberration Correction Bug with Select Sigma Lenses and Canon EOS 6D Mark II, EOS  (Read 2778 times)

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As with most new Canon DSLR releases, there are some third party lenses that may present the odd vignette when “Lens Aberration Correction” is turned on with various Canon DSLRs.

From Sigma: We have found that some SIGMA interchangeable lenses for CANON are not fully compatible with CANON EOS 6D Mark II released on August 4th, as well as EOS 9000D (77D), EOS Kiss X9i (Rebel T7i) and EOS Kiss X9 (Rebel SL2).

When certain lenses are attached to these cameras and the “Lens aberration correction” function on these cameras is set to “Enable” for Live View shooting, an error would occur.

Please set the “Lens aberration correction” function of the cameras to “Disable” when using SIGMA’s interchangeable lenses for CANON.

In addition, please also refer to other notice below, related to the usage of EOS mount SIGMA lenses on Canon cameras.

Phenomenon When the lenses listed below are used on EOS 6D Mark II, EOS 9000D, EOS Kiss X9i, or EOS Kiss X9 and the “Lens aberration correction” function on the camera is set to “Enable” for Live View shooting, an error would occur.

Products Affected

  • SIGMA 30mm F1.4 DC HSM | Art
  • SIGMA 30mm F1.4 EX DC HSM
  • SIGMA 35mm F1.4 DG HSM | Art
  • SIGMA 50mm F1.4 EX DG HSM
  • SIGMA 85mm F1.4 EX DG HSM

Usage Notice for customers who are using EOS mount SIGMA lenses on CANON cameras When using the SIGMA lenses for CANON, “Peripheral illumination correction”, “Chromatic aberration correction”, “Diffraction correction” as well as “Distortion correction” from the “Lens aberration correction” function of the camera are not supported. Therefore, we recommend you to set them to “Disable”.

If those functions are set to “Enable”, the performance of the lenses may not be accurate.

For further information, please contact your nearest authorized SIGMA subsidiary / distributor.

We appreciate your continued support for our company and products.

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Luds34

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Any info on liveview underexposing by like 3 or 4 stops?

blindcat

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The day before yesterday I bought a 35mm 1,4 Art lens. I use it on the 5D MK IV. At home I thought first it's broken, because it showed circles and rings with sharp edges in the preview of the raws in camera (I dont store jpg). Googeling that problem brought no results! After I phoned with the store they told me to switch off all lens corrections. After that the circles and rings went away. I wish that would be clearer explained somehow. If I buy a sigma for the canon bayonett I would not be upset if at first there would be a note in the box for paying attention to lens corrections on canon cameras.
Greets,
frankie

weixing

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Hi,
    Did Sigma actually mention this is a bug?? Because it isn't... it work as advertised, but not with lens that "impersonate" as a Canon lens.   

    By the way, I just wonder is there any Sigma lens that is compatible with Canon "Lens Aberration Correction" function?

    May be Sigma should use those lens code that Canon don't provide correction data for it, so no correction will be applied when the feature is turn on.

    Have a nice day.

Valvebounce

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Hi weixing.
My understanding is that Sigma (and other 3rd party manufacturers?) use a code for a lens (not necessarily in the same focal length range?) that has similar drive requirements for the AF and IS systems so that the camera drives these systems at the desired rates?
Using an unallocated number might result in the body identifying the lens as "no lens attached" or even worse, driving the focus system in to the end of the travel at full speed due to not having any parameters set?
I'm not certain of any of this hence marking them as questions so that hopefully one or more of the knowledgeable members will correct or verify my understanding of the situation.

Cheers, Graham.

Hi,
May be Sigma should use those lens code that Canon don't provide correction data for it, so no correction will be applied when the feature is turn on.

    Have a nice day.
7DII+Grip, 1DsIII, 7D+Grip, 40D+Grip, EF 24-105 f4L EF-S 17-85, EF-S 10-22, EF 70-200 f2.8 L IS II, EF 2x III, EF 100-400 f/4.5-5.6l IS II, Σ17-70 f2.8-4 C, EF 50mm f1.8, YN600EX-RT, YN-E3-RT, Filters, Remotes, Macro tubes, Tripods, heads etc!

1DsIII, 20D, 24-105, 17-85, Nifty 50 pre owned.

weixing

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Hi,
    May be those who use third party lens affected by this issue can try removing the lens data from the camera one by one to find out which is use by that third party lens and remove them from their camera if they don't want to disable the function. When the lens data is not in the camera, no correction will be done.

    Have a nice day.

   

scrup

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Incompatibilities like this turn me off Sigma completely. You save some cash initially, in the long run it works out even if you had just gone OEM.

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factor

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This is not Sigmas fault - seems like Canon crippled their cameras first, and third party lenses support now...
So mutch attention to protect self pastly ... there is no other arguments more for Canon ... ? :(

privatebydesign

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This is not Sigmas fault - seems like Canon crippled their cameras first, and third party lenses support now...
So mutch attention to protect self pastly ... there is no other arguments more for Canon ... ? :(

Yes it is 100% Sigma's fault.

They choose not to pay for a lens registration code, that means they spoof an official Canon code, that means the camera thinks a different lens than is actually on it is on it, therefore it applies the wrong aberration corrections. How is that not Sigma's fault?

By the way Zeiss do pay Canon for unique lens codes, that is why the same thing doesn't happen to people who use native fit Zeiss glass on their Canon bodies.
Too often we lose sight of the fact that photography is about capturing light, if we have the ability to take control of that light then we grow exponentially as photographers. More often than not the image is not about lens speed, sensor size, DR, MP's or AF, it is about the light.

factor

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then ... why theese lenses are working on older Canon cameras without issues ... ?

privatebydesign

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then ... why theese lenses are working on older Canon cameras without issues ... ?

Bescause Canon don't test for Sigma compatibility on new body firmware, Sigma do test for compatibility on older body firmware. Canon shouldn't be held responsible for Sigma spoofing lens codes.
Too often we lose sight of the fact that photography is about capturing light, if we have the ability to take control of that light then we grow exponentially as photographers. More often than not the image is not about lens speed, sensor size, DR, MP's or AF, it is about the light.

Ryananthony

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then ... why theese lenses are working on older Canon cameras without issues ... ?

Bescause Canon don't test for Sigma compatibility on new body firmware, Sigma do test for compatibility on older body firmware. Canon shouldn't be held responsible for Sigma spoofing lens codes.

True. But I don't see this as being an issue anyway. As far as I'm aware, this only effects in camera jpg and it is only a problem until sigma releases a firmware update and solves the issue.

factor

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then ... why theese lenses are working on older Canon cameras without issues ... ?

Bescause Canon don't test for Sigma compatibility on new body firmware, Sigma do test for compatibility on older body firmware. Canon shouldn't be held responsible for Sigma spoofing lens codes.

hmmm - I realy do not think that "lens code" change self on lens, depend on what body mounted (old or new) ... ?
« Last Edit: August 10, 2017, 04:55:24 PM by factor »

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slclick

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It's a setting, not a bug. Saying this turns you off to Sigma is a huge overreaction. Isn't it common knowledge that 3rd party glass has compatibility issues with newer bodies? Too much whining not enough understanding.

Mt Spokane Photography

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All third party manufacturers have a tough time with lenses, since they must provide a code to the camera that identifies the lens.  The camera firmware has a table of lenses and codes, and the capabilities and corrections for each lens.  As canon expands their in-camera correction of lenses to include more models of lens, suddenly it appears that a lens is not working on the new camera.  I keep the in camera corrections turned off, the corrections can be done by DPP, Lightroom, DXO, and probably most serious image editing software.

If you use third party lenses, flashes, or other accessories that electrically connect to the camera, you should expect issues until firmware fixes are issued, or you may just have a paperweight.  That happened to me with Sigma lenses, 4 of 5 became paperweights because Sigma did not update the firmware.  The 5th cost me $100 for the upgrade due to their poor reverse engineering.  I've avoided Sigma since.  Others who get caught like this are house brands which are rebadged Sigma, Tamron, or Tokina lenses.  The manufacturers will not touch them, so you have to hope the original seller can fix them.

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