ProMaster MR1 Macro Focusing Rail with Quick Release Plate Frame your subjects and focus your camera with ultimate precision using the ProMaster MR1 Macro Focusing Rail. Its X/Y design gives you the freedom to move your camera front to back and side to side using gear-driven controls. Lock-down knobs keep your camera steady when you are ready to press the shutter button. The MR1 features the ProMaster dovetail quick release system (compatible with arca-swiss type dovetail products) for rapid attachment to a tripod (with matching receiver) as well as your camera. Features: Dovetail quick release plate Quick release receiver Quick release receiver clamping knob Focusing rail top plate Quick release receiver lock-down screw holes X axis scale Y axis scale X axis control knob X axis lock-down knob Y axis control knob Y axis lock-down knob Focusing rail base Using the controls to operate the focusing rail Loosen the X axis lock-down knob and then rotate the X axis control knob either direction to move your camera side to side. Do the same with the Y axis lock-down knob (and Y axis control knob (10) to achieve a front-to-back movement. For best results tighten the lock-down knobs before taking a picture. Compatible With: Tripod Plates: ProMaster Dovetail Quick Release Plate Dimensions: 7.3 x 6.5 x 3.5" (LxWxH) Weight: 1.44 lbs Product SKU: 6095 In The Box: ProMaster MR1 Macro Focusing Rail ProMaster Dovetail Quick Release Plate2 Mounting Screws Allen WrenchLimited 1-Year Manufacturer Warranty Note: Always mount the focus rail to a tripod BEFORE attaching your camera to the focus rail.