5DsR + Sigma 35mm 1.4 Art Strange Error

[loomitz]

I was testing my new 5dsr and the time to put the sigma 35mm art , something strange happened , appeared some circles in both images , jpg as in the video, the raw disappear , but look at the preview .

after some research I found that it was the fault of the Lens aberration correction // peripheral illumination , disabling resolve the issue .

Video:

https://www.youtube.com/watch?v=JVESl6Uv8zg

Jpg (example):

 

[Mt Spokane Photography]

Third party lenses communicate with a camera by sending the camera a code for a Canon lens that has similar properties. This makes life very difficult for a lens when a new camera is released that works differently than previous models. The Camera contains information about all Canon EF lenses, and can corrects a image based on the lens characteristics. Since the Sigma is pretending to be a Canon lens, do not turn on any features that try to correct a image in camera, the result may not be a good one.

A firmware update is occasionally issued to fix a serious problem.

 

[OCEANSPRINCE]

is any problem with this combination? or just was an random issue?
im ready to buy Sigma 35mm 1.4 ART and i have Canon 5dsr..

 

[DigiAngel]

The 50mm ART does kind of the same (but not to that extreme extent) on the 5D III.

 

[OCEANSPRINCE]

what is your suggestion? to avoid sigma?

 

[bdunbar79]

what is your suggestion? to avoid sigma?

Not at all. Just don't expect in-camera settings that affect JPG output to always be correct.