Adjustable Arm

Definition

An Adjustable Arm (often referred to as a "Magic Arm") is a grip accessory with one or more ball joints, locked by a central lever or knob. It allows for flexible positioning of monitors, small lights, cameras, and other equipment.

Types

Magic Arm (Manfrotto Style)

• Two ball joints
• Central locking lever
• Very common
• Load capacity: approx. 3-6 kg

Noga Arm

• Flexible hose with joints
• Finer adjustment
• Lower load capacity

Hydra Arm

• Multiple independent joints
• More complex positions possible
• Higher load capacity

Typical Applications

On Camera Rig

• Monitor mounting
• Battery holder
• Wireless receiver
• External recorders

Lighting & Grip

• Small LED panels (Dedolight, etc.)
• Reflectors
• Flags
• Diffusion

Special Applications

• Gimbal remote control
• Teleprompter mounting
• Director's reference monitor

Mounting Options

Input (Attachment)

• Super Clamp
• 1/4"-20 thread
• 3/8"-16 thread
• Baby Pin (5/8")

Output (Mounting Point)

• 1/4"-20 for monitors
• 3/8" for heavier equipment
• Ball Head for cameras

Quality Features

Premium (Manfrotto, Kupo)

• Stable locking
• No drift under load
• Durable

Budget (SmallRig, etc.)

• Affordable entry-level option
• May sag under load
• Okay for light loads

Safety Instructions

• Always use a Safety (safety wire)
• Observe maximum load capacity
• Do not position over people without safety measures
• Regularly check the locking mechanism

See also

• Magic Arm – Specific variant
• C-Stand – Often used in combination
• Super Clamp – Mounting clamp