How to Use a Magic Arm for Camera Rig Setup

Quick answer

Attach the SmallRig magic arm to a 1/4-20 threaded point on your rig, articulate the ball heads to position your accessory, then lock both levers to prevent movement.

How to set up your magic arm in 4 steps

1. Attach the arm to a 1/4-20 threaded point on your rig: Screw the retractable pin into a 1/4-20 hole on your cage, top handle, or baseplate. Tighten until the padded mount contacts the surface, then use the locking lever to secure it. Common mistake: over-tightening the screw without using the lever can strip the threads. Always use the lever for final lock.
2. Attach your accessory to the other end: Mount your monitor, LED panel, or microphone to the second 1/4-20 screw. If the accessory has a cold shoe or different thread, use an adapter. Tighten the screw, then flip the lever to lock. Check that the accessory's weight does not exceed 3.3 lb. Heavier gear may cause the arm to droop over time.
3. Articulate both ball heads to your desired position: Loosen both locking levers slightly, then move the arm so the accessory is exactly where you need it—above, beside, or in front of the camera. Tighten each lever by hand until the arm holds its position without drifting. If the arm sags after tightening, the load may be off-center. Reposition the accessory closer to the centerline of the ball joint.
4. Lock both levers fully and test for stability: Press each locking lever down firmly. Gently tap the accessory to see if it wobbles. If it moves, re-tighten the lever while holding the ball head steady. A loose lever is the most common cause of drift during shooting. Double-check both levers before you start recording.

Product facts

• SmallRig Magic Arm Support with 1/4"-20 Screws (11"): 11" length with a 3.3 lb load capacity and 1/4-20 anti-twist screws with retractable pins. The longer arm gives extra reach for positioning a field monitor or light above the rig, but you must lock both ball heads firmly to avoid sag.

  

• SmallRig Magic Arm Support with 1/4"-20 Screws (7"): 7" length with a 3.3 lb load capacity and padded screw mounts that prevent twisting and protect equipment from scratches. The shorter arm reduces leverage, so it stays more rigid under load and is a better fit for compact rigs or lighter accessories.