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Sigma 150-600 Contemporary won't communicate properly with R5 and R6 since firmware upgrade

markphoto
Contributor

I'm using the Sigma 150-600 Contemporary with an EF-R adapter on my R5 and R6.  It worked fine, until I upgraded the camera firmware to the latest version.  Since then, I get an Error 01, "Communications between the devices is faulty.  Check the camera, lens, or mount adapter contacts". 

I have tried cleaning all the contracts with isopropyl alcohol.

Has anybody encountered this problem?  Will upgrading the lens firmware solve the problem?  I would have to purchase the lens dock to do this.

1 ACCEPTED SOLUTION

I certainly think that it is worth a try.  However, Sigma have consistently said that they did not design these lenses to work with the new R-series bodies, and that they do not guarantee the results.

Mark, given that the last firmware update I have is 1.6.0, and my system still works fine, I would suggest saving the camera's current configuration to one of the Custom settings (C1-C3) and then doing a camera reset to see if that resolves the issue.  If not, you can then restore your camera back to the previous configuration.


cheers, TREVOR

"All the variety, all the charm, all the beauty of life is made up of light and shadow", Leo Tolstoy;
"Skill in photography is acquired by practice and not by purchase" Percy W. Harris

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21 REPLIES 21

Given you use Canon adapters, I would recommend checking that status of the lens own firmware version.  While Sigma clearly states that they do not guarantee that their lenses perform with R-series bodies, having the latest firmware installed on the lens is always a good move.   I have the latest firmware on my Sigma lenses and upgraded to 1.6.0 on the R5 and R6 bodies with no issues.


cheers, TREVOR

"All the variety, all the charm, all the beauty of life is made up of light and shadow", Leo Tolstoy;
"Skill in photography is acquired by practice and not by purchase" Percy W. Harris

ebiggs1
Legend
Legend

"I have tried cleaning all the contracts with isopropyl alcohol."

 

Stop doing that, it very rarely to never helps and can make things worse. Much worse!

 

"I'd contact Sigma to see if they are aware of the problem and have a solution."

 

I would too. Canon does not make their cameras work with off brand lenses. It is up to the lens maker to make sure the lens works on a Canon body. I think this might be an ongoing problem as I have heard of it from several different people.

As to the Sigma dock, I would buy it, I did. It is of little use 99% of the time but when you need it, it is a nice to have unit.  It isn't expensive. If it were much more expensive I would advise you don't need it. Sigma used to, they may still do so, update your lens FW for free. But you have to send the lens to them. A hassle, expense, for sure that the dock  eliminates.

EB
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