Arca-Swiss Lens Plate for Sony FE 100-400mm f/4.5-5.6 GM OSS

The Hejnar Photo 3.00-Inch Lens Plate is a high-performance mounting solution custom-designed specifically for the Sony FE 100-400mm f/4.5-5.6 GM OSS telephoto zoom lens. This precision-machined plate provides a native Arca-Swiss dovetail profile on its base, allowing your lens foot to interface directly and securely with professional ball heads, gimbal mounts, and quick-release clamps. Featuring an integrated hand strap loop socket, a low-profile captive mounting screw, and a dedicated anti-twist pin, it offers the uncompromising stability required for professional sports, wildlife, and event photography workflows.

Quick Overview & Key Features

• Tailored G Master Fit: Optimized 3.00-inch footprint engineered to perfectly match the specific dimensions and base contour of the factory Sony 100-400mm GM lens foot.
• Integrated Strap Loop Slot: Features a dedicated built-in loop channel slot to facilitate the direct connection of professional hand straps, wrist slings, or secondary safety tethers.
• Anti-Twist Integration: Combines a stainless steel captive mounting screw with a dedicated anti-twist pin to lock the plate perfectly square to the lens foot, effectively eliminating twisting and rotation.
• Streamlined Arca Mount: Features a single, ultra-low-profile Arca-Swiss dovetail profile on the base for maximum structural rigidity, tight axis alignment, and excellent clamp clearance.
• Clean Ridgeless Profile: Flat, highly versatile mounting surface that maintains a slim physical profile while ensuring maximum structural contact and high-strength clamping power.
• Smooth No-QD Build: Traditional solid flat-surface profile built explicitly without integrated push-button QD sling sockets for maximum under-clamp sliding smoothness.
• Universal Standard: Universal dovetail configuration ensures total, plug-and-play compatibility with quick-release clamp systems from RRS, Kirk, Wimberley, Leofoto, and Markins.
• Fail-Safe Security Stops: Equipped with dual pre-installed bottom safety-stop screws to stop your valuable camera and lens assembly from accidentally sliding out of a loosened tripod receiver.
• Premium Construction & Finish: Precision CNC-machined in the USA from a solid block of aircraft-grade 6061-T6 aluminum and treated with a rugged black hard-coat anodized layer for advanced wear resistance.

SAE Technical Specifications

• Plate Length: 3.00 inches
• Plate Width: 1.50 inches
• Mounting Hardware: One (1) captive-style 1/4-20 stainless steel screw and one (1) precision anti-twist pin
• Carrying Interfaces: Integrated hand strap loop slot (No push-button QD sockets)
• Material Construction: Precision CNC-machined solid 6061-T6 Aluminum
• Exterior Finish: Black Hard-Coat Anodized Surface
• Safety Features: Dual integrated safety-stop screws

Product Description

The dedicated Hejnar Photo 3.00-Inch Lens Plate is a vital technical upgrade for professional photographers utilizing the elite Sony FE 100-400mm f/4.5-5.6 GM OSS lens. This custom accessory seamlessly transforms your factory lens foot into a native Arca-Swiss component, providing a rock-solid connection to your tripod head that completely eliminates the unwanted vibrations, flex, and play associated with generic universal mounting adapters. The 3.00-inch rail length is meticulously chosen to provide a generous fore-aft adjustment travel range, allowing you to fine-tune your center of gravity and achieve a perfect neutral balance on gimbal nodes or fluid heads when paired with varying mirrorless camera bodies.

Security and equipment protection remain paramount in this design. By combining a premium captive-style stainless steel 1/4-20 screw with a dedicated mechanical anti-twist registration pin, the plate locks onto the G Master lens foot with extreme stability. This structural layout resists heavy rotational leverage, keeping your camera setup aligned square to the tracking track even during rapid transitions between landscape and portrait panning configurations.

The utility is further enhanced by the inclusion of an integrated, heavy-duty strap loop socket channel. This built-in slot allows you to lace and secure your favorite ergonomic wrist strap, hand sling, or field safety tether directly through the unibody of the plate. By opting for a traditional configuration without bulky push-button sockets, this plate maintains a clean, ultra-smooth build that glides effortlessly through tight clamp receivers. It eliminates deep pocket cavities, ensuring an ultra-low profile that won't catch on gear bag divider slots. Precision CNC-milled in the USA from solid aluminum and packed with professional fail-safes, this lens plate delivers the technical precision your mirrorless photography demands.