70-300mm F/4.5-6.3 Di III RXD

(Model A047)

The world’s smallest and lightest* telephoto zoom lens

Model A047

70-300mm F/4.5-6.3 Di III RXD

  • SONY E

Get 300mm telephoto range like an expert

Zoom into the world of telephoto

The world’s smallest and lightest1 telephoto zoom lens

A high-resolution telephoto zoom lens that is powerful, portable, and fun

To make the 300mm telephoto focal length more fun and accessible, TAMRON focused intently on designing a telephoto zoom lens that’s both small and lightweight. Turning the conventional concept of a telephoto lens on its head, the 70-300mm F4.5-6.3 is only 148mm (5.8 in) in length with a maximum diameter of 77mm and a weight of just 545g (19.2 oz). This gives users the freedom to concentrate fully on shooting without worrying about lens size or weight. In addition to those wishing to pursue real telephoto shooting for the first time, the lens is also recommended for people who use cameras that have built-in image stabilization because they can leave the tripod at home. Of special significance, when paired with the APS-C mirrorless cameras, this zoom adds additional telephoto reach and while remaining comfortable to handle. Users can enjoy shooting with even higher power telephoto effects at a maximum equivalent focal length of approximately 450mm3.

3 For APS-C mirrorless format: 105-450mm equivalent field-of-view

Achieves the ultimate combination of light weight and outstanding optical performance

Camera: Sony α7 III Focal length: 300mm Exposure: F6.3 6sec ISO 100

High performance autofocus system means you’ll own every shooting opportunity

Camera: Sony α7 III Focal length: 102mm Exposure: F4.5 1/800sec ISO 100

TAMRON Lens Utility™ software for Nikon Z mount

With the Nikon Z mount version, users can employ the dedicated TAMRON Lens Utility software that was developed in-house by TAMRON4. This application enables users to easily update the lens to the latest firmware themselves without going through the camera5.

4 To connect your PC and lens, use the TAMRON Connection Cable (USB Type-A to Type-C/ Model CC-150, or USB Type-C to Type-C/ Model CC-350) sold separately.
5 As the 150-500mm F5-6.7 is not equipped with a Focus Set Button, certain functions cannot be customised.

TAMRON Lens Utility

* Model A047 Pictured

Pursue a wide range of photography with a lineup of lenses for Sony full-frame E-mount cameras that all have the same 67mm filter diameter

Great things come in compact packages! This lineup includes other lenses that share the same filter diameter of 67mm. Lenses in this series feature small and light designs suitable for pairing with mirrorless cameras, and the filter diameter of each lens is the same 67mm. In addition to providing excellent portability when carrying multiple lenses, costly Polarizers, ND and other filters can be used interchangeably. Plus, the hassle of looking for different-sized lens caps when switching lenses has been eliminated. In addition to outstanding optical quality, you will enjoy the highest level of convenience across the entire lineup.

* The lineup of lenses that share the same filter diameter of 67mm for Sony E-mount full-frame mirrorless

Mirrorless Lenses with 67mm filter diameter

Built with Mirrorless in Mind

■ For Sony E-mount includes:

  • Fast Hybrid AF
  • Eye AF
  • Direct Manual Focus (DMF)
  • In-camera lens correction (shading, chromatic aberration, distortion)
  • Camera-based lens unit firmware updates

■ For Nikon Z mount includes:

  • Hybrid AF
  • Eye AF
  • M/A Mode
  • In-camera lens correction (shading, chromatic aberration, distortion)

* The firmware update is available via TAMRON Lens Utility

* Features vary by camera. Please consult your camera’s instruction manual for details.
* As of August, 2022

Lens Technologies

BBAR G2 (Broad-Band Anti-Reflection Generation 2) Coating

Innovative coating technology that prevents ghosting and flare

Circular Aperture

A several-blade diaphragm is configured to retain a smooth, circular-shaped aperture opening even when stopped down by two stops from the wide-open aperture

Moisture-Resistant Construction

Leak-resistant seals throughout the lens barrel help protect your equipment when shooting outdoors

LD (Low Dispersion) lens elements

The characteristic of less of a tendency to separate a ray of light into a rainbow of colors effectively compensates for chromatic and lateral chromatic aberration

RXD (Rapid eXtra-silent stepping Drive)

A stepping motor unit for high-speed and high-precision autofocus

Tamron Technology




Angle of View (diagonal) 34゜21′-8゜15′
(for full-frame mirrorless format)
Optical Construction 15 elements in 10 groups
Minimum Object Distance 0.8m (31.5 in) (WIDE) /
1.5m (59.1 in) (TELE)
Maximum Magnification Ratio 1:9.4 (WIDE) / 1:5.1 (TELE)
Filter Size Φ67mm
Maximum Diameter Φ77mm
Length* 148mm / 5.8 in (Sony)
150.3mm / 5.9 in (Nikon)
Weight 545g / 19.2 oz (Sony)
580g / 20.5 oz (Nikon)
Aperture Blades 7 (circular diaphragm)**
Minimum Aperture F22-32
Standard Accessory Round-shaped hood, Lens caps

SONY E Mount


Release Date

October 29, 2020 (SONY E Mount)

September 29, 2022 (NIKON Z Mount)

* Length is the distance from the front tip of the lens to the lens mount face.
** The circular diaphragm stays almost perfectly circular up to two stops down from maximum aperture.

Specifications, appearance, functionality, etc. are subject to change without prior notice.

This product is developed, manufactured and sold based on the specifications of E-mount which was disclosed by Sony Corporation under the license agreement with Sony Corporation.
This product is developed, manufactured and sold under the license agreement with Nikon Corporation.


Optical Construction (17 elements in 15 groups)