Canon has warned anyone shooting with the Canon EOS R5 Mark II mirrorless cameras not to use some SanDisk SD cards. The company says that you may end up with corrupted images.
What has Canon said?
Canon USA published a product advisory notice about the issue on the support pages of its website. The notice explains that still images taken with the EOS R5 Mark II may be recorded as corrupted or abnormal. This is due to the incompatibility of certain SanDisk Extreme PRO SDXC UHS-II V60 cards. However, Canon says that the problem only occurs with 64 GB, 128 GB and 256 GB capacity cards in that range.
What has SanDisk said?
The Canon product advisory notice page has a link that takes you to the SanDisk website. It’s labelled “Steps to Resolve SanDisk Extreme PRO SDXC UHS-II V60 64GB, 128GB, and 256GB Still Image Problem with a Canon EOS R5 Mark II.” However, when you follow the link the page you land on doesn’t offer any solutions. It simply confirms that using the cards will result in abnormal still images being recorded. The only resolution offered is to contact SanDisk about warranty replacement.
Compatible SanDisk SD cards
The Canon product advisory notice page also has a link to which SanDisk SD cards you can use with the EOS R5 Mark II. Again, this takes you to the SanDisk website. The compatible cards include the Extreme PRO SDXC UHS-II V90 cards in both 300 MB/s and 260 MB/s write speeds. In addition, one curiosity is that the 1 TB and 512 GB capacities of the V60 cards are compatible with the EOS R5 Mark II. This suggests that there is a difference between those cards and the 64 GB, 128 GB and 256 GB cards beyond just the capacities.
What we think
The issue with the EOS R5 Mark II and some of their SD cards is yet another blow for SanDisk. Towards the end of 2023, we reported that a data recovery company had raised concerns over the reliability of some SanDisk portable SSDs. In addition, SanDisk’s parent company, Western Digital, has faced claims that some of its NAS drives had serious security vulnerabilities. Photographers and videographers work hard to capture great images and often you only get one chance. The last thing you want to find is that your images are corrupted and the moment is lost. Canon users may need a lot of convincing before they rely on SanDisk’s SD cards again in the future.
