Sirui HA-77 Horizontal Arm

Sirui HA-77 Horizontal Arm

The HA-77 Horizontal Arm from Sirui is a telescoping cross arm that can be combined with a tripod or stand to create a miniature camera boom. Its total 30.3 of length is provided by a two-section tube that rests on top of a tripod head, which features 360° of independent rotation. The tube and the head are connected by a fulcrum, which enables 90° of upwards or downwards tilt that can be locked into place. This allows an attached camera to be easily raised toward an elevated subject or over a scene. For subjects along the ground, the HA-77 Horizontal Arm can be used to obtain low angles while its user stands comfortably behind the camera.

This horizontal arm has a load capacity of 11 lb and is compatible with tripods or support systems that feature a 3/8 -16 mount. Thumbscrew locks are positioned on the HA-77 Horizontal Arm s tripod head, fulcrum, and the clamp that holds its telescoping, two-section tube on the fulcrum. By loosening each of these thumbscrew locks, the tripod head can be swiveled, the fulcrum tilted, and the two-section tube pushed toward or pulled away from the subject. Additionally, a twist lock on the two-section tube allows for rapid deployment of its second section.

To precisely position and extend the two-section tube, its first section features clearly visible hatch marks engraved at 0.5cm intervals from 0-30cm, the second section includes hatch marks along its length from 0-27cm that are also engraved at 0.5cm intervals, while the fulcrum s 90° upwards or downwards tilt can be set according to 10° intervals. For use as a miniature boom, the front end of the HA-77 Horizontal Arm on the two-section tube s second section includes a flat plate with a reversible mount that can accommodate a camera or tripod head with a 3/8 -16 or 1/4 -20 female accessory thread. At the rear end of the horizontal arm on the two-section tube s first section, a removable foam-padded handle with a ballast hook provides a secure and comfortable grip as well as the ability to counterbalance any items placed at the front of the horizontal arm.

Alternatively, the HA-77 Horizontal Arm can be used to adapt multiple devices to a single tripod or stand. By obtaining a second flat plate with a reversible mount from Sirui that can be substituted for the foam-padded handle, a camera or tripod head can be placed on both sides of the horizontal arm. With a ball head on both sides of the HA-77 Horizontal Arm, a configuration of two parallel cameras, or a single camera that is parallel to a different device can be created. When the HA-77 Horizontal Arm is used with its foam-padded handle, a camera that is placed toward the end of two-section tube s reversible mount can be positioned perpendicular to the tripod or stand which the horizontal arm is attached to. The camera can then be extended past the tripod or stand s legs, which is particularly useful for copy stand or macro photography of subjects directly below the camera lens.

• Telescoping cross arm with 11 lb load capacity that can be combined with a tripod or stand to create a miniature camera boom
• Compatible with tripods or support systems that feature a 3/8 -16 mount
• 19.7 to 30.3 of length provided by a two-section tube, which rests on top of a tripod head featuring 360° of independent rotation
• Two-section tube and the head are connected by a fulcrum, which enables 90° of upwards or downwards tilt that can be locked into place
• Individual thumbscrew locks allow tripod head to be swiveled, the fulcrum tilted, and the two-section tube pushed toward or pulled away from the subject
• Twist lock on the two-section tube allows for rapid deployment of its second section
• For precise positioning, first section of the two-section tube features clearly visible hatch marks engraved at 0.5cm intervals from 0-30cm, the second section of the tube includes hatch marks along its length from 0-27cm that are also engraved at 0.5cm intervals, and the fulcrum s 90° upwards or downwards tilt can be set according to 10° intervals
• Front end on the two-section tube s second section includes a flat plate with a reversible, side-facing mount that can accommodate a camera or tripod head with a 3/8 -16 or 1/4 -20 female accessory thread
• Removable foam-padded handle with a ballast hook provides a secure and comfortable grip as well the ability to counterbalance any items placed at the front of the horizontal arm
• Foam-padded handle can be substituted with a second, flat plate with a reversible mount from Sirui
• With a separately-available flat plate with reversible mount, a configuration of two parallel cameras, or a single camera that is parallel to a different device can be created
• When foam-padded handle is in use, two-section tube and a camera at side-facing mount can be extended past the tripod or stand s legs, useful for copy stand or macro photography of subjects below the camera lens
• 3/8 -16 mount on foam-padded handle allows it to be unscrewed from two-section tube and screwed into the tripod head s accessory head for storage and transport
• Measures 14.6 x 5.3 when configured and folded for storage and transport
• Durable, aluminum-alloy construction
• Drawstring pouch for storage and transport
• Hex key to remove or install tripod head or two-section tube s flat plate
• Two hex keys to tighten fulcrum retaining screw
• Ballast hook can be removed from foam-padded handle to be used as a hex key to remove or install tripod head or two-section tube s flat plate
• Tip of 3/8 -16 mount of foam-padded handle can be used as a hex key to remove or install tripod head or two-section tube s flat plate