It is 3 fps. The number of serial images may vary depending on the quality, size and subject, these are approximate values only.
Approximate value with 512MB Sandisk CF card Ultra II is as shown below.
Actual value varies with the card and the subjects.
(L:3008x2000 / M:2256x1496 / S:1504x1000)
STD: 24 / 470 / 926
FINE: 10 / 40 / 584
X.FIN: 3 / 9 / 314
RAW + JPEG: 3 / 3 / 3
RAW: 5