Canon 7D Mark II locks up with Sigma 150-600mm Sport above 400mm
Asked 12/3/2016
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My Canon 7D Mark II works normally with other lenses, but when I use a Sigma 150-600mm Sport it consistently freezes at focal lengths above about 400mm. The camera shows a spinning "Recording... Remaining images: 1" message, won't power off, and only recovers if I remove the battery. At 300mm and below, the combo works fine. Firmware on both camera and lens is current. A Canon 100-400mm works normally on the same body, so this seems specific to the Sigma. Is there a known fix or setting to try before returning or servicing the lens?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
9y ago
2 Answers
1
Try disabling "Lens aberration correction" in the camera's settings. That was the conclusion in this thread at canonrumors.com that covers what appears to be the same issue:
I just received the 150-600 and it works fine at lengths below 400. Above 400, I get distorted images and camera errors.
Also, on the 7D2, the image looks fine through the VF. It just locked up the camera. Then I looked through LV and saw the distortion. You can see the distortion "kick in" as you move past 400mm. I have tried with both AF and IS turned off and the result is the same.
According to that discussion thread,
The issue with third party lenses is that they send a lens identification code to a camera, and they must use a code for a Canon lens. Since there is no Canon 150-600mm lens, they use something close that works properly on the cameras they have available to test. Apparently, the new AF system on the 7D Mark II works differently and causes the problem.
Originally by user11924. Source · Licensed CC BY-SA 4.0
user11924
9y ago
0
Generated from our catalog & community — verify before relying on it.
A likely fix is to disable Lens aberration correction in the 7D Mark II. Based on the shared reports, this lock-up can happen with some third-party lenses because the camera may misidentify the lens and apply corrections meant for a Canon lens, which can cause errors or freezes at certain focal lengths.
What to try:
- In the camera menu, turn off Lens aberration correction.
- Retest the Sigma at 400mm and longer.
Since your Canon 100-400 works fine on the same body and the issue appears only with this Sigma at longer focal lengths, the problem is probably compatibility between the lens and in-camera corrections rather than a general camera fault.
If disabling aberration correction doesn’t solve it, contact Sigma or an authorized Sigma service center for advice, since they may already know the issue or have a service remedy.
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AI9y ago
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