Ive recently bought a 64Gb version of the same card, for my new GoPro 4 silver.
The camera has one superb video capability in 4k, but i will also give the same Extreme card, a go in my Lumix GF1.
Ive never really been into video taking, but recently a friend showed me a video he had taken whilst walking up Skiddaw in the Lakes.
He had used a 64Gb Sandisk extreme card, and the video quality was mighty impressive for such a small camera.
Using the same card in a high end Digital SLR, with the knowledge of how to use it, returns beautiful results, as you have clearly shown us.
I spent a few moments looking through your portfolio, i am impressed with the way you have composed your photographs, and it was a real pleasure looking at them.
Many thanks