I know that there has been some discussion about this, but I'm not finding a single thread that pulls all the comments together.
I wrote CPS and got the following response:
Not the most reassuring response, but I imagine that the unpredictability of the issue might mean it will take some time to narrow down exactly what the problem is. I have a Lexar CFast card, that I think I will start using more frequently and see if the problem occurs with it. For jobs where I don't want to risk any spoiled frames, I'll stick to the CF card until this gets straightened out.
As near as I can tell, I only had one frame corrupted on the card and it was the first time I experienced it with the card. It was when the card was well over half filled. I format my cards in camera before each use.
Curious what others have been experiencing.
I wrote CPS and got the following response:
Dear ,
Thank you for contacting Canon product support. I understand you're having trouble with some corrupted images from your EOS-1D X Mark II. I would be happy to help you with this.
In certain limited cases we've seen that SanDisk Extreme Pro CFast cards can produce some distortions similar to what you are experiencing. As far as we can tell this distortion only happens when shooting stills, not videos. The image distortion seems to happen infrequently, so it might help to fire bursts of images at a time. Otherwise, you can try shooting images onto an older CF style card, or to a CFast card made by a different manufacturer. We are exploring this situation and hope to have more details about it available to our customers soon.
I hope this information is helpful to you. Please let us know if we can be of any further assistance.
Thank you for choosing Canon.
Sincerely,
XXXXX
Technical Support Representative
Not the most reassuring response, but I imagine that the unpredictability of the issue might mean it will take some time to narrow down exactly what the problem is. I have a Lexar CFast card, that I think I will start using more frequently and see if the problem occurs with it. For jobs where I don't want to risk any spoiled frames, I'll stick to the CF card until this gets straightened out.
As near as I can tell, I only had one frame corrupted on the card and it was the first time I experienced it with the card. It was when the card was well over half filled. I format my cards in camera before each use.
Curious what others have been experiencing.