I think that the eye-fi sd cards serve a really great function, I can download my images to all my devices without fuss. BUT the only issue is it's read/write speed. The Pro X2 16GB is max 22mb/s, a little too slow for my liking.
So here is my question. How does a nikon dslr write on to the sd cards when the second slot is set to be a back-up/duplicate. Does it write on both sd cards at the same time? Or does it write on a single card first? I'm sure you guys can see where i'm going with this.
So here is my question. How does a nikon dslr write on to the sd cards when the second slot is set to be a back-up/duplicate. Does it write on both sd cards at the same time? Or does it write on a single card first? I'm sure you guys can see where i'm going with this.