Everything is said in the title ... The 16 GB offer a comfortable reserve in terms of shots, even in RAW + Jpeg but especially in quick bursts the "buffer" the device never saturates and your EOS 7D always answers this, the foot. It deserves its qualification as "Extreme PRO", a little expensive it's true, but as said the famous maxim (Tontons Flingueurs) "The price is forgotten, the quality remains." A "must-have" for your 7D. Relay Point Delivery in Kiala a bit long (a week!), But hey I ordered earlier in the week of November 11 (bridge ???)