Designed to achieve exacting camera-to-subject distance, the Macro Focusing Rail is a focusing stage offering fine- tuned control across a 115mm adjustment range. Sliding speed adjustable, you can slide slowly or you can go fast. Screw-knob with CNC cutting texture, for better gripping. Standard dovetail groove, compatible with ARCA, RRS clamps. Compact and super lightweight, easy carrying. It has longest range thanks for the compact QR plate design. The rail is driven by a knob-controlled worm gear and index scales, in millimeters, are printed on both sides of the rail for consistency. Cameras can be mounted on top of the rail via the integrated 1/4 inch screw, which uses a 48mm-diameter thumbwheel to secure cameras in place. 214mm overall length (including adjustment knob). › See more product details