{"product_id":"hejnar-photo-8-inch-screw-adjusting-arca-swiss-mac","title":"8-Inch Screw Adjusting Arca-Swiss Macro Rail | Made in USA","description":"\u003c!-- ===================== GRAY BANNER ===================== --\u003e \n\u003cdiv style=\"background:#e5e5e5;padding:12px 15px;margin-bottom:18px;\"\u003e \n    \u003cstrong\u003eHejnar Photo 8-Inch Arca-Swiss Screw Adjusting Macro Rail with 0.004\" Fine Control\u003c\/strong\u003e \n\u003c\/div\u003e \n\n\u003c!-- ===================== SEO BLOCK (TOP) ===================== --\u003e \n\u003ch1\u003e8-Inch Screw Adjusting Arca-Swiss Macro Rail | Made in USA\u003c\/h1\u003e \n\u003cp\u003e\n    The \u003cstrong\u003eHejnar Photo 8-Inch Screw Adjusting Macro Rail\u003c\/strong\u003e is a professional-grade precision instrument custom-tailored for high-magnification macro photography, forensic imaging, and advanced focus stacking. Utilizing an ultra-fine lead screw mechanism, this linear stage delivers an incredible \u003cstrong\u003e0.004 inch (0.1mm) sensitivity per scale division\u003c\/strong\u003e. Built with a fully integrated Arca-Swiss compatible bottom dovetail and a modular quick-release slider clamp, it offers the uncompromising stability required for professional studio and demanding field workflows.\n\u003c\/p\u003e \n\u003chr\u003e \n\n\u003c!-- ===================== QUICK OVERVIEW \u0026 KEY FEATURES ===================== --\u003e \n\u003ch2\u003eQuick Overview \u0026amp; Key Features\u003c\/h2\u003e \n\u003cul\u003e \n    \u003cli\u003e\n\u003cstrong\u003eFine Precision Drive:\u003c\/strong\u003e High-resolution lead screw allows for flawless camera-to-subject focal plane adjustments in sub-millimeter increments.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eRapid Positioning Button:\u003c\/strong\u003e Features an instant-release slider button that allows for fast, coarse framing before engaging the fine lead screw drive.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eSelf-Aligning Linear Bearings:\u003c\/strong\u003e Maintenance-free, PTFE-lined bearings provide completely smooth, nonabrasive travel without requiring any debris-trapping wet lubricants.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003e4-Position Modular Clamp:\u003c\/strong\u003e The Arca-style quick release slider clamp can be unbolted and reoriented in 90-degree steps to accommodate any custom camera plate or lens foot layout.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eArca-Swiss Standard Base:\u003c\/strong\u003e Integrated bottom dovetail rail ensures a perfect, zero-play lock inside standard quick-release clamps from RRS, Kirk, Wimberley, and Leofoto.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eExtreme Environment Coating:\u003c\/strong\u003e Finished with a specialized 0.002\" thick ceramic hard coat for superior corrosion, wear, and chemical resistance.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWide Temperature Rating:\u003c\/strong\u003e Rugged design is rated to operate flawlessly across a extreme thermal range from –400° to +375° F.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProfessional Build Quality:\u003c\/strong\u003e Precision CNC-machined from a solid block of premium 6061-T6 aircraft-grade aluminum in the USA.\u003c\/li\u003e \n\u003c\/ul\u003e \n\n\u003c!-- ===================== PRODUCT SPECIFICATIONS ===================== --\u003e\n\u003ch2\u003eSAE Technical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBottom Rail Length:\u003c\/strong\u003e 8.00 inches\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaximum Travel Distance:\u003c\/strong\u003e 4.30 inches\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAdjustment Resolution:\u003c\/strong\u003e 0.004 inch (0.1mm) per scale division\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLead Screw Pitch:\u003c\/strong\u003e 0.0416 inch (1.06mm) travel per full revolution\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHorizontal Load Capacity:\u003c\/strong\u003e 15 lbs (Parallel to ground)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVertical Load Capacity:\u003c\/strong\u003e 10 lbs (Perpendicular to ground)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFinish Thickness:\u003c\/strong\u003e 0.002\" Ceramic Hard Coat\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- ===================== PRODUCT DESCRIPTION ===================== --\u003e \n\u003ch2\u003eProduct Description\u003c\/h2\u003e \n\u003cp\u003e \n    The \u003cstrong\u003eHejnar Photo 8-Inch Screw Adjusting Macro Rail\u003c\/strong\u003e is a critical engineering tool for photographers working with paper-thin depths of field. By moving your entire camera rig smoothly along a linear track rather than rotating the lens focus ring, you maintain an absolutely constant reproduction ratio. This physical constancy is essential for accurate multi-frame focus stacking, ensuring seamless software alignment and flawless rendering during post-processing.\n\u003c\/p\u003e \n\u003cp\u003e \n    Engineered to survive and perform in extreme field environments, the stage replaces traditional metal-on-metal tracks with a premium \u003cstrong\u003ePTFE-lined linear bearing system\u003c\/strong\u003e. This self-aligning architecture provides nonabrasive sliding movement and remains completely chemical-resistant. Because it operates cleanly without the need for external grease or oil, it prevents sand, grit, or outdoor debris from gumming up your adjustments during outdoor botanical or macro fieldwork. Its advanced 0.002\" ceramic armor and expansive thermal tolerance ensure absolute operational reliability from freezing sub-zero mountain ranges to scorching studio hot-lights.\n\u003c\/p\u003e \n\u003cp\u003e \n    With an impressive horizontal weight handling threshold of 15 lbs, this focusing stage comfortably manages full-frame professional DSLR or mirrorless kits paired with heavy macro primes and complex dual-flash brackets. When oriented vertically at a 90-degree angle for copy stand work or overhead lab configurations, it rigidly locks down assemblies up to 10 lbs without focus drift or sagging. Precision CNC-milled in the USA and paired with rugged stainless steel driving hardware, this macro rail delivers the uncompromising structural precision required for world-class technical imagery.\n\u003c\/p\u003e","brand":"Hejnar Photo","offers":[{"title":"Default Title","offer_id":67701617000553,"sku":"MS5P-8-KS","price":355.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/1278\/9353\/files\/MS5P-8-KS-5_a2f1c947-23af-4bec-bf6b-fc6d4c1e2fed.jpg?v=1793670064","url":"https:\/\/www.hejnarphotostore.com\/products\/hejnar-photo-8-inch-screw-adjusting-arca-swiss-mac","provider":"Hejnar Photo","version":"1.0","type":"link"}