4" Base Plate for Metabones Z-Foot | Advanced Lens Support & Balance Rail

The Hejnar Photo 4-Inch Base Plate is a professional engineering solution custom-designed to interface with specialized Z-shape adapter feet on Metabones lens adapters. When the Z-foot and this dedicated 4.00-inch base plate are connected, they form an ultra-rigid unified support system. This structural layout replicates the balancing handling of a native telephoto lens collar foot, shifting the mounting point forward away from the camera chassis to drastically optimize overall weight distribution and tracking control on tripods or gimbals.

Quick Overview & Key Features

• Telephoto Collar Functionality: Converts standard lens configurations into a forward-mounted telephoto layout, taking structural stress off the camera's native bayonet mount.
• Optimized 4.00" Travel Rail: Generous extended base provides a broad fore-aft adjustment zone to dial in a perfect neutral center of gravity.
• Adjustable Vertical Positioning: Advanced modular geometry allows the vertical Z-foot component to be mounted in different physical locations along the base channel for tailored balancing.
• Universal Arca Dovetail Profile: Integrated Arca-Swiss track on the base ensures a flawless, zero-play lock inside standard quick-release clamps from RRS, Kirk, Wimberley, and Leofoto.
• Anti-Twist Alignment Channels: Precision-milled geometric tracks prevent rotational slipping or mechanical play under heavy torque loads.
• Premium Construction & Finish: Precision CNC-machined in the USA from solid 6061-T6 aircraft-grade aluminum and treated with a rugged black hard-coat anodized finish.
• Heavy-Duty Hardware: Paired with high-tensile, corrosion-resistant stainless steel mounting screws built to withstand intense field use.

Technical Specifications

• Product Category: Lens Adapter Support / Base Plate Component
• Rail Footprint Length: 4.00 inches
• Base Profile Type: Arca-Swiss Compatible Single Dovetail
• Modular Adjustment: Variable positioning tracks for right-angle Z-foot integration
• Material Construction: CNC-Milled 6061-T6 Aircraft Aluminum
• Exterior Finish Layer: High-Durability Black Hard-Coat Anodization
• Country of Origin: Proudly Made in the USA

Product Description

The Hejnar Photo 4-Inch Base Plate for Metabones Z-Foot solves a critical balance and stabilization bottleneck commonly faced by wildlife, sports, and cinematic mirrorless shooters deploying adapted telephoto or heavy prime lenses. When non-collared lenses are attached via an adapter, the entire structural weight is suspended directly off the camera body mount. This rear-heavy geometry results in severe nose-diving on tripods, restricts smooth fluid movement on gimbals, and introduces unwanted micro-vibrations that can ruin image sharpness during long exposures.

This advanced system resolves that physical limitation entirely. By anchoring your Z-shape foot directly onto this specialized 4.00-inch base plate, the mounting profile transforms completely. The layout acts exactly like a traditional telephoto lens foot collar, shifting the physical weight support point forward into a perfectly neutral position. To adapt seamlessly to varying equipment builds—such as adding a heavy battery grip or using unique lens hoods—the vertical portion of the Z-foot can be unbolted and repositioned across different locations along the base plate axis, allowing for a fully custom-tailored weight distribution.

Bespoke-crafted in the USA from ultra-strong aircraft aluminum, this low-profile base rail eliminates structural flexing while keeping your center of axis tight to the tripod head for maximum stability. The bottom features a flawless Arca-type dovetail profile that slides smoothly into professional receivers without slop. Finished with a rugged black hard coat built to withstand field transport scuffs and paired with robust stainless steel fasteners, this base plate delivers the technical precision and lifelong tracking stability your photography workflow demands.

Please Note: This listing is for the 4-inch base plate base component only. A compatible Metabones Z-shape vertical foot adapter is required to complete the structural lens support assembly.