I just received it today and test photo (perfect) and especially in FULL HD video 25images PAL / NTSC and dry at 30 frames / sec. I feel that on the camera's screen images are more jerky than they really are. By cons there is indeed a jump images every 5 seconds. So I strongly recommend to use the compact flash 400x 32GB model if you expect to achieve mainly videos with your Canon camera EOS 5D mark II. If not for photography this card deserves 5 stars.