Sony FE 100-400mm f/4.5-5.6 GM OSS Lens

Sony FE 100-400mm f/4.5-5.6 GM OSS Lens (Sony E, White)
Flagship Professional Super-Telephoto Zoom – Long-Reach 100-400mm Focal Range (150-600mm APS-C 35mm Equivalent), Optical SteadyShot (OSS) Image Stabilization, Dual-Motor AF System (Direct Drive SSM & Double Linear Motor) for Rapid & Silent Focus Tracking, G Master Optical Formula Featuring One Super ED Element & Two Extra-Low Dispersion (ED) Elements, Nano AR Coating for Flare Suppression, Floating Elements Design with Close 3.2′ Minimum Focusing Distance (0.35x Maximum Magnification Ratio), Mechanical Zoom Torque Adjustment Ring (Smooth/Tight), Three Customizable Focus Hold Buttons, Focus Range Limiter, Removable Rotating Tripod Collar & Foot, Dust- and Moisture-Resistant Construction with Front Fluorine Coating, Compatible with 1.4x and 2.0x Teleconverters (Up to 800mm Reach), Standard 77mm Front Filter Thread, Includes Front and Rear Caps, Dedicated Lens Hood with Filter Access Window, and Removable Tripod Foot, Native Full-Frame Sony E-Mount (Excellent Condition)

The Sony FE 100-400mm f/4.5-5.6 GM OSS (SEL100400GM) is a flagship, high-performance super-telephoto zoom lens engineered specifically for full-frame Sony E-mount mirrorless cameras (providing an expansive 150-600mm equivalent reach when paired with APS-C bodies). As a premier member of Sony’s distinguished G Master series, this optic delivers prime-rivaling corner-to-corner resolution, high micro-contrast, and natural bokeh throughout its entire zoom range. Tailored for professional sports photojournalists, trackside action shooters, wildlife and birding enthusiasts, and telephoto landscape photographers, it balances long focal reach with an agile, handheld-friendly design that packs easily into field backpacks.

The optical design comprises 22 elements arranged in 16 groups, incorporating one Super ED element and two Extra-Low Dispersion (ED) elements to effectively suppress axial chromatic aberrations, color fringing, and secondary spectrum distortions. Surface reflections, flare, and ghosting are mitigated by Sony’s Nano AR multi-coating, preserving deep contrast and accurate color rendition even in harsh, backlit conditions. Autofocus is powered by a high-precision dual-actuator system combining a Direct Drive Super Sonic wave Motor (DDSSM) and a double linear motor system, driving the floating focus groups swiftly, quietly, and accurately to track erratic subjects at rapid burst rates. Close-up performance is anchored by a close 3.2-foot (0.98 m) minimum focusing distance, achieving a 0.35x maximum magnification ratio. Handheld stability is bolstered by built-in Optical SteadyShot (OSS) image stabilization with multi-mode panning support, functioning in coordination with 5-axis in-body stabilization on Alpha camera bodies. The lens features a tactile zoom torque adjustment ring, three programmable barrel focus hold buttons, full weather sealing, a front fluorine coating, and full compatibility with Sony’s 1.4x and 2.0x teleconverters (yielding up to 800mm of reach). Complete with its dedicated bayonet hood and detachable rotating tripod foot, this G Master super-telephoto delivers benchmark performance in top-tier shape.

CONDITION DIAGNOSTICS & PHYSICAL NOTES

Included Components: COMPLETE PROFESSIONAL SUPER-TELEPHOTO OUTFIT. Supplied with the Sony FE 100-400mm f/4.5-5.6 GM OSS lens, genuine Sony 77mm front snap-on lens cap (ALC-F77S), genuine Sony rear E-mount lens dust cap (ALC-R1EM), original dedicated bayonet lens hood (ALC-SH151) with integrated sliding filter access door, and original removable rotating tripod collar foot mount. (Teleconverters, camera bodies, 77mm screw-in filters, and padded carrying cases sold separately unless pictured).

Exterior & Barrel Status: EXCELLENT CONDITION. The off-white G Master thermal-reflective barrel finish, textured rubber zoom and manual focus rings, mechanical zoom torque adjustment collar, switch panels, and tripod mounting assembly show minimal to no signs of previous handling. The barrel is free of deep scratches, dings, scuffs, chips, or edge paint wear. All laser-engraved focal length indices, switch labels, three barrel-mounted Focus Hold buttons, and orange “G Master” metal emblems remain crisp, clean, and fully legible.

Optical Status: EXCELLENT CONDITION. Both front and rear external optical glass surfaces are pristine and completely free of scratches, scuffs, cleaning marks, haze, fungus, or coating degradation. The internal optical assembly is clean and clear with only trace, negligible dust specks typical of standard super-telephoto zoom handling; bench testing confirms these specks do not impact resolving power, edge contrast, or color fidelity across working apertures. Factory Nano AR multi-coatings and front fluorine coatings remain immaculate.

Mechanical & Electronic Diagnostics: FULLY FUNCTIONAL. The DDSSM and double linear autofocus drives acquire focus swiftly, accurately, and silently; manual focus ring operates smoothly with consistent electronic damping; the mechanical zoom throw extends and retracts cleanly across 100-400mm with zero binding, while the Zoom Torque Adjustment ring smoothly transitions resistance between “Smooth” and “Tight”; the Optical SteadyShot (OSS) stabilization engages cleanly without jump or drift across Mode 1 and Mode 2; all three Focus Hold buttons click decisively; the focus limiter switch toggles securely between Full and 3m-Infinity; the rounded 9-blade diaphragm stops down crisply without sticking or oil residue; the removable tripod foot rotates smoothly and locks down tight via the knurled locking knob; the weather-sealed rubber mount gasket is supple and intact; gold-plated E-mount electronic contacts communicate Exif metadata and in-body corrections reliably with zero camera error codes.