I used the card in a Canon EOS 7D. 100 shots Approx 10% of the images are broken. The error is as follows. The images are either incomplete or not even readable. It does not matter if you want to watch the images directly in the camera monitor, or memory card via a card reader on the computer. The kind of photography does not matter. The error occurs in both single as well as continuous shooting. Also, I have the memory card as recommended by Support, multiple formatted in the camera - with no success. Since I already then another memory card use without error in the camera beforehand, and even now, I can rule out the camera as a cause of failure. Due to the frequency of this error in forums and recessions, I have, Special decided a SanDisk Ultra CompactFlash 16GB Memory Card for no exchange. With this I have been able to make about 1500 shots without losses. There might only be a problem associated with some Canon - models (50D, 5D, 7D) is I forgive two star.