I've come across an issue with my Canon 5d mark iii, and wonder if anyone else has had this.
Recently after I've taken pics with compact and SD cards, then onto my MacBook Air, opened and tagged in the new Photomechic 6, then the RAW files are opened in Photoshop CC 2019, then saved to the desktop.
After I eject the card, then put it back into the Canon, I get an 'error 70 message' (from a Canon website - Description: A malfunction with the images has been detected) and the camera basically shuts down. This happens with both compact and SD cards.
One of my friends has the same issue, he had a Canon 7d mark ii, and he found that if you put the card back into the mac, use Disk Utility to erase the card, then put the card back into the camera, then you can format the card, the camera works, no error 70 message.
This hasn't happened before, so can't say for sure where the issue seems to be happening.
Any ideas?