DS5 Users Please Note Before You Buy: The DS5 fluid head changed from the #487 snap lock camera plate to the #490 sliding camera plate on the 1/6/2006. First DS5 Serial Number to use the #490 was D23000, any serial number higher than this or starting with the letter E uses the #490. if your DS5 serial number is earlier than this you must purchase the #487 Camera Plate.