I was looking into how fast the D7000 can actually write data from the buffer to the sd card. I found that it definitely supports the new SDXC cards, which are currently up to 104mb/sec.
The D7000 can shoot 6fps max. This table from the D7000 manual is saying that a sandisk class 10 extreme @ 30mb/s can write 10 files to the buffer in NEF(RAW) 14-bit (or 1.6 seconds worth of pics) before the 6fps speed starts to over run the buffer and starts to slow down. Keep in mind too, that while pictures are being written into the buffer, they are being written out to the sd card at the same time.
So, what if we had a 104mb/sec SDXC card in there? Assuming that we can now write out of the buffer at 3.4 times the speed, you would be able to take 34 images in RAW (or 5.6 seconds worth) before the buffer fills and you have to wait a second or two to resume taking pics a 6fps.
Does my math make sense and am I assuming that the buffer is working this way?
The D7000 can shoot 6fps max. This table from the D7000 manual is saying that a sandisk class 10 extreme @ 30mb/s can write 10 files to the buffer in NEF(RAW) 14-bit (or 1.6 seconds worth of pics) before the 6fps speed starts to over run the buffer and starts to slow down. Keep in mind too, that while pictures are being written into the buffer, they are being written out to the sd card at the same time.
So, what if we had a 104mb/sec SDXC card in there? Assuming that we can now write out of the buffer at 3.4 times the speed, you would be able to take 34 images in RAW (or 5.6 seconds worth) before the buffer fills and you have to wait a second or two to resume taking pics a 6fps.
Does my math make sense and am I assuming that the buffer is working this way?