Oops! I stand corrected, which still leaves me wondering about the reason for the price difference between the A77 and the A99. skieur
That kinda threw me also. I think this only the second DSLR/SLR they have released a memory stick slot. Interestingly it looks like the memory card slot is actually a dual purpose slot that can take either a memory stick or an SD card. I was suprised no QXD slot was included. The combination of high files sizes and SD cards baffles me.
A bigger memory card would require a larger body I think. With twin SD card, it should be able to keep up fairly well.
Why would having twin sd cards increase write speeds? Unless you can set them up to be a striped raid array, which would be a cool but risky prospect.
If we can split the files between the cards and write on both at the same time that would be beneficial. I use a UHC SD card in my A65 and I rarely run out of buffer shooting RAW (24MB files on average). The issue is when swapping from video to still. And according to the Sony documentation, you can split video and still and write each on one card.