Sirui HA-77 Horizontal Arm

Sirui HA-77 Horizontal Arm

Sirui HA-77 Horizontal Arm

B&H # SIHA77 MFR # SUHA77
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Sirui HA-77 Horizontal Arm

Sirui HA-77 Horizontal Arm

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Product Highlights

  • 19.7 to 30.3" Telescoping Cross Arm
  • Load Capacity: 11 lb
  • Mount Camera Perpendicular to Tripod
  • Use as Miniature Camera Boom
  • Swivel 360°, Tilt 90° Up or Down
  • Length and Angle Hash Marks
  • Reversible 1/4"-20 or 3/8"-16 Mount
  • Built-In Swivel Head with 3/8-16 Thread
  • Padded Boom Handle, Counterweight Hook
  • Aluminum-Alloy Construction
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  • 1Description

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
In the Box
Sirui HA-77 Horizontal Arm
  • Pouch
  • Hex Key for Tripod Head and Telescoping Tube Plate Retaining Screws
  • 2 x Hex Key for Fulcrum Retaining Screw
  • Limited 6-Year Warranty
  • Table of Contents
    • 1Description
    Load Capacity 11 lb / 5 kg
    Female Connection Type One 3/8"-16 accessory thread
    Male Connection Type Reversible 3/8"-16 or 1/4"-20 mount
    Material of Construction Aluminum alloy
    Dimensions Deployed: 19.7 x 7.9" to 30.3 x 7.9" (50 x 20.1 cm to 77 x 20.1 cm)
    Folded: 14.6 x 5.3" (37.1 x 13.5 cm)
    Weight 2.6 lb (1.2 kg)
    Packaging Inforquucxyuddwbbfweavzrresryzrawsxttyczy
    Package Weight 3.5 lb
    Box Dimensions (LxWxH) 16.3 x 5.0 x 4.7"
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