Excerpt: I have only shot with it for about two weeks. The local Cannon repair shop suggested upgrading to a faster CF card as a way to perhaps fix the 'busy' signal that I get when shooting in rapid succession. I have still gotten the busy signal twice when taking pictures of my children, so I am not sure if the problem has been solved yet. But the card is working well.
Excerpt: I like the size and think it's perfect for my use. I dont like too much memory cause then it's too much for me to go through when i am reviewing photos. Good quality and have never had a problem with this brand.
Excerpt: Great to a card that is larger enough for a great shooting. I run 2 Extreme 128GB in my 1Dx and write to both of them. That way, I have an automatic backup, just in case one card is curropted.Two reasons I did not give this card 5 stars.1. Misleading advertising. Speed shown is read speed (down speed). This is much less important to me than write or upload speed.