10" Lead Screw Micro Focusing Rail with Arca-Swiss Quick Release Clamp

The Hejnar Photo Lead Screw Micro Rail is a precision-engineered instrument designed for the most demanding macro photography, lab imaging, and fine alignment tasks. This system features a 10-inch Arca-Swiss compatible dovetail base and a modular slider stage, offering unmatched stability and sub-millimeter control. Proudly CNC-machined in the USA from aircraft-grade aluminum, it is built to provide lifelong reliability for professional photographers and researchers alike.

SAE Technical Specifications

• Bottom Rail Length: 10.00 inches.
• Maximum Travel Distance: 6.30 inches.
• Lead Screw Resolution: 0.0416 inch (1.06mm) travel per full revolution.
• Material: CNC-machined 6061-T6 Aluminum.
• Hardware: Stainless Steel components.
• Finish: Black Hard Coat Anodized.
• Load Capacity (Horizontal): 15 lbs.
• Load Capacity (Vertical): 10 lbs.

Quick Overview & Key Features

• Precision Lead Screw Mechanism: Delivers ultra-fine adjustment of 1.06mm per revolution for critical focal plane alignment.
• Rapid Positioning Stage: Integrated release button allows the slider to disengage for fast coarse framing before fine-tuning.
• Modular 4-Position Clamp: Top Arca-style quick release clamp can be reoriented in 90° increments using a secure center screw and dowel pin system.
• Universal Arca-Swiss Base: 10" bottom rail features a standard dovetail compatible with RRS, Kirk, Wimberley, and other industry-standard clamps.
• Safety First Design: Includes two integrated safety stops to prevent equipment overtravel during adjustment.
• Exceptional Durability: Finished with a black hard-coat anodize for extreme wear and corrosion resistance.

Detailed Product Description

The Hejnar Photo 10-Inch Lead Screw Micro Focusing Rail solves the challenge of razor-thin depth of field in macro and focus-stacking workflows. By adjusting the distance between the camera and the subject via the rail rather than the lens focus ring, you maintain a constant magnification ratio—a critical factor for clean post-processing and stacking results.

This system is engineered for versatility. The 10-inch base provides an expansive platform for balancing long lenses or creating complex nodal slides. The slider stage features a modular clamp that can be rotated to face any of the four cardinal directions, allowing you to align your camera body or L-bracket exactly how the shot requires. Whether working on a horizontal tabletop or at a vertical 90° angle for top-down captures, the rail remains rigid and precise.

Craftsmanship is paramount; every component is CNC-machined from 6061-T6 aluminum and utilizes stainless steel hardware. The lead screw provides silky-smooth travel, while the manual release button ensures you don't waste time cranking the handle for long-distance movements. This is a professional tool built for reliability in the studio or the field.