In a major blow to the company’s latest flagship camera, Canon has confirmed another issue with the 1D-X Mark II. It appears that when the camera is used with certain SanDisk CFast cards, a number of images are corrupted when the camera is shut down.

The glitch appears to affect the last few shots that were written to the card, and causes permanent corruption to the bottom half of the image. This is in addition to an earlier issue discovered with certain Sigma lenses when Canon’s Peripheral Illumination Correction was used, causing distortion to the image.

However, it appears that the fault lies with SanDisk rather than Canon in this cases, with an official statement from SanDisk acknowledging the issue and affirming that “Canon and SanDisk have worked together to develop a new camera firmware release that resolves the card issue, which will be available shortly.”

Despite SanDisk taking the bullet for this issue, it’s clearly something that should have been flagged during rigorous user testing, particularly considering that many UK retailers bundled the Canon 1D-X Mark II with the SanDisk cards in question.

In the meantime, the only solution according to Canon is to shoot at least 16MBs worth of data before powering off the camera. The final 16MBs of data written to the card are usually corrupted by the glitch, which occurs in both RAWs and JPEGs.

The cards that are affected by the glitch include cards with the following product numbers;