Sirui MS18 Macro Focusing Rail

TheMS18 Macro Focusing RailfromSiruiis a precision linear motion lead screw focusing stage and rail, incorporating a camera platform with a rotating Arca-type quick release set. The rail has a capacity of 6.69″ of travel distance, each full rotation of the crank providing 1.25mm of movement for precise camera positioning. The focusing knob has a crank handle that conveniently folds flat. The rail has a hollowed-out design to reduce weight, but it still maintains a robust 22 lb load capacity. The base of the rail features an Arca-type dovetail, making it easy to mount on compatible devices. It also has four removable, rubber-tipped feet for tabletop use.

The camera platform has a locking lever and incorporates an Arca-type quick release clamp that can be quickly rotated into four positions in 90 increments. The included quick release plate has traction pads to resist movement between the plate and camera body.