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Rent NowTamron 70-300mm f/4.5-6.3 Di III RXD Lens (Sony E)
Ultra-Lightweight, High-Mobility Telephoto Zoom for Full-Frame Mirrorless Systems
The Tamron 70-300mm f/4.5-6.3 Di III RXD is a dynamically engineered telephoto zoom lens tailored natively for full-frame Sony E-mount mirrorless cameras. Spanning a highly practical short-to-long telephoto field of view, this lens reimagines the traditional telephoto layout by compressing massive focal reach into an incredibly streamlined, portable frame. Measuring just 5.8 inches in length and weighing a featherlight 1.2 pounds, it holds the distinction of being one of the most compact and accessible 300mm zoom lenses in its class.
By coupling high-grade aberration-correcting optics with Tamron’s rapid RXD stepping motor, this telephoto zoom serves as a highly functional, agile option for tracking fast-paced outdoor sports, isolated wildlife behaviors, distant landscapes, and compressed portraits without the physical strain of heavy gear bags.
Expanded Telephoto Spectrum & Corrective Optical Design
Versatile 70-300mm Framing Canvas: Delivers a flexible telephoto baseline ideal for full-frame Sony shooters looking to compress spatial perspectives. It is also completely compatible with crop-sensor APS-C mirrorless cameras, where it steps up to an impressive 105-450mm equivalent super-telephoto reach.
Low Dispersion (LD) Element Architecture: Formulated with 15 optical elements arranged in 10 groups, incorporating one precisely positioned Low Dispersion glass element. This component actively targets and suppresses axial chromatic aberrations and color fringing that commonly degrade high-ratio telephoto captures.
In-Camera Telemetry Correction Sync: Designed to coordinate natively with Sony’s internal camera profiles, unlocking automatic, real-time corrections for peripheral shading (vignetting), chromatic aberrations, and geometric distortion directly inside the camera chassis.
Rounded Seven-Blade Diaphragm: Outfitted with a 7-blade circular aperture array that delivers a smooth, organic background blur (bokeh), allowing your primary subjects to pop cleanly against out-of-focus elements.
High-Speed RXD AF & Seamless Sony Focus Integration
Rapid RXD Stepping Focus Motor: Driven by Tamron’s proprietary Rapid Extra-silent stepping Drive (RXD) motor unit. This internal focusing mechanism provides high-speed, dead-accurate, and exceptionally quiet focus tracking, making it perfect for capturing skittish wildlife and recording video without mechanical noise.
Full Camera Feature Tracking Compatibility: Operates in perfect harmony with Sony’s advanced mirrorless firmware protocols. It fully supports high-tier tracking capabilities, including Fast Hybrid AF, real-time Eye AF tracking, and seamless Direct Manual Focus (DMF) manual overrides.
31.5-Inch Close-Focus Proximity: Maintains an impressive minimum focusing distance of just 31.5 inches (0.8 meters) at the short end of the zoom range, giving you the flexibility to frame tight, detailed close-up compositions of nearby subjects.
Durable Weather Resistance & Smart Firmware Support
Aluminum-Magnesium Alloy Chassis: Constructed using a high-strength aluminum-magnesium alloy matrix on core structural components, guaranteeing excellent mechanical durability and rigidity while keeping the physical weight down to 19.2 ounces.
Moisture-Resistant Body Construction: Outfitted with specialized environmental seals strategically placed at the lens mount and structural joints to help prevent rain droplets and dust intrusion when shooting in inclement outdoor environments.
TAMRON Lens Utility Firmware Hub: Fully compatible with Tamron’s dedicated Lens Utility software platform, allowing users to conveniently update lens firmware and calibrate internal parameters directly from a computer via the camera interface.
Technical Specifications
Lens System Classification: Ultra-Compact Standard-to-Super Telephoto Zoom Lens
Lens Mount Type: Sony E-Mount (Full-Frame and APS-C Mirrorless Compatible)
Focal Length Range: 70-300mm (105-450mm equivalent on Sony APS-C sensors)
Maximum Variable Aperture: f/4.5 (Wide) to f/6.3 (Telephoto)
Minimum Operational Aperture: f/22 to f/32
Filter Thread Diameter Size: 67mm (Standardized across Tamron’s mirrorless lineup)
Lens Optical Layout: 15 Elements configured in 10 Groups (Includes 1 LD Element)
Autofocus Motorization: RXD (Rapid Extra-silent stepping Drive) Motor
Focusing Infrastructure System: Internal Focusing (IF) Matrix
Minimum Focus Distance: 31.5 inches / 0.8 meters (Wide) | 59.1 inches / 1.5 meters (Telephoto)
Maximum Magnification Ratio: 1:9.4 (Wide) | 1:5.1 (Telephoto)
Aperture Blade Count: 7-Blade Diaphragm (Rounded Layout)
Chassis Shell Composition: High-Strength Aluminum-Magnesium Alloy with Moisture Sealing
Dimensions (Diameter x Length): Approx. 3.03 x 5.80 inches / 77.0 x 148.0 mm
Weight: Approx. 19.2 oz / 545 grams (Class-leading lightweight telephoto footprint)
