Arca-Swiss Clamp with Built-In Cotton Carrier Hub – 2.375" Quick Release

 🧲 Hejnar Arca-Swiss Clamp with Built-In

Cotton Carrier Hub – 2.375" Quick Release

Looking to streamline your workflow between tripod, gimbal, and holster carry? The Hejnar Photo 2.375" Arca-Swiss Clamp with Integrated Cotton Carrier Hub is a precision-engineered solution designed for photographers who rely on Cotton Carrier systems and Arca-style quick release setups.

🔧 Purpose-Built for Cotton Carrier G3 & G2 Systems

This clamp engages directly with Cotton Carrier camera holsters (including the G3 Harness and G2 Scout)—no adapters or extra mounts required. It’s ideal for long lenses equipped with Arca-style feet, allowing seamless transitions between holster carry and tripod or gimbal use.

When mounted in a harness, the clamp positions the knob along the lens axis for ergonomic access. No more balance issues or awkward disengagements—just smooth, secure handling.

✅ Compatibility

This clamp is fully compatible with:

• Cotton Carrier G3 Harness, G2 Scout
• Arca-Swiss, Really Right Stuff (RRS), Markins
• Wimberley, Kirk, Photo Clam, Foba
• Vanguard ABH Series, Custom Brackets, Jobu Designs, Acratech
• Gitzo, Benro, Sirui, Leofoto, iFootage
• SmallRig (Arca-compatible), Novoflex, Sunwayfoto, 3 Legged Thing
• Other Arca-style clamps and heads

📐 Specifications

• Length: 2.375"
• Weight: 4.9 oz (138g)
• Relief Groove: 2.6mm deep for plate safety stops
• Knob: Captive, one-piece aluminum, dust-resistant
• Design: Tongue-in-pocket for jaw alignment and grit protection
• Material: CNC-machined 6061-T6 aluminum
• Finish: Black hard coat anodized clamp, black anodized knob
• Hardware: Stainless steel
• Made in USA

🔗 Why This Clamp Matters

Whether you're shooting wildlife, sports, or field portraits, this clamp eliminates the need for extra hardware when switching between Cotton Carrier holsters and Arca-Swiss tripods. It’s a rugged, elegant solution for photographers who demand speed, security, and modularity.

Replacement Foot for Sony 400–800mm

 

🦅 Hejnar Photo Replacement Foot for Sony 400–800mm: Stability Meets Precision

Sony’s FE 400–800mm f/6.3–8 G OSS lens is a super-telephoto marvel, built for wildlife, sports, and outdoor shooters who demand reach and clarity. But with great length comes great leverage—and that’s where the Hejnar Photo Arca-Type Replacement Foot steps in.

🔧 Why Replace the Stock Foot?

The factory foot on Sony’s 400–800mm lens is functional, but not optimized for serious tripod or monopod use. The Hejnar replacement foot offers:

• Arca-Swiss compatibility for seamless integration with ball heads, gimbals, and clamps.
• Lower profile and improved balance for better center-of-gravity alignment.
• Captive 1/4-20 screw mount for secure attachment.
• QD (Quick Detach) socket option for sling-style strap mounting.

Whether you're tracking a bald eagle or shooting motorsports from the sidelines, this foot delivers the kind of stability and modularity that professionals expect.

📐 Precision Engineering

Made in the USA from 6061-T6 aluminum, the Hejnar foot is:

• CNC-machined for exact tolerances.
• Black hard coat anodized for durability and corrosion resistance.
• Lightweight yet rigid, minimizing vibration and flex during long exposures or fast action bursts.

It’s compatible with top-tier support systems including RRS, Markins, Wimberley, Kirk, Acratech, Photo Clam, Foba, Jobu Designs, and Vanguard ABH Series.

🧰 Ideal Use Cases

• Wildlife photography: Long lens setups on gimbals or tripods.
• Sports and action: Quick repositioning with Arca clamps.
• Field work: Sling-ready with QD socket for mobile setups.
• Studio and macro: Precision alignment with nodal rails or macro stages.

📦 What’s Included

• One replacement foot for Sony FE 400–800mm lens
• Captive mounting screw
• Hex key for installation

🚚 Shipping & Availability

Hejnar Photo offers free USPS First Class shipping with tracking. For time-sensitive orders, expedited options like FedEx, UPS, or Express Mail are available at checkout.

If you’re serious about maximizing the performance of your Sony 400–800mm lens, upgrading to a Hejnar foot is a no-brainer. It’s not just a replacement—it’s a precision upgrade.

Arca Clamp with Stainless Steel QD insert

Use the centered QD socket to attached a standard push-button QD mount. QD system has been used for years by industries around the world including NASA, law enforcement and military agencies. The design inhibits accidental removal, especially when the camera is hanging from the strap. Attach your favorite strap to the clamp, then mount the clamp to any of Arca Type plates , L brackets or Foot Replacements. Straps are available at eBay, Amazon, Cabala's, Bass Pro and other stores with sporting fishing and military equipment.

 

Canon R5 Mark II Camera Plate

 Camera plate for Canon R5 Mark II. Strap loop and QD ( Quick Detach) socket build in. Full access to battery compartment.

• 3.53 inches long.
• 1.50 inches wide
• 3/8 inches thick plus locating pin
• Weight 47g (1.65 oz)
• One 1/4-20 tapped hole
• QD socket build in
• Precision C.N.C. machined from 6061-T6 Aluminium
• Made in USA
• Stainless steel hardware
• Black hard coat anodized surface