Zoom into the world of telephoto
The 70-300mm F/4.5-6.3 Di III RXD (Model A047) for Sony full-frame E-mount mirrorless cameras is a telephoto zoom lens designed and created so photographers of all skill levels can enjoy high quality images comfortably. It achieves the world's smallest size and lightest weight, coming in at 5.8 in. long with a maximum diameter of 77mm, and weighing just 19.2 oz. With special emphasis on resolving power, Tamron has deployed special lens elements appropriately arranged to correct chromatic aberration, generally very strong in a telephoto lens, as well as other aberrations. Users can enjoy high-resolution images combined with the stunning bokeh qualities that are achievable only with a telephoto lens. The lens also incorporates the RXD (Rapid eXtra-silent stepping Drive) unit, a high-speed precision AF drive system that is remarkably quiet. The 70-300mm is a versatile lens for photographing landscapes, sports and other action, pets and wildlife and more. The lens also demonstrates its potential for portrait shooting, casual snapshots and scenarios that require you to be mobile and shoot handheld, like sporting events. Designed for full-frame, the lens is at home on APS-C mirrorless cameras and provides a 105-450mm equivalent field-of-view. 

Highlights:

• The world’s lightest and most compact telephoto zoom lens for Sony full-frame and APS-C mirrorless cameras 

• Supreme lightweight portability that makes telephoto shooting fun

• Uncompromising image quality with 15 elements in 10 groups that lets you focus on creativity

• Up-close shooting performance (31.5" / 1:9.4 Wide & 59.1" / 1:5.1 Tele)

• RXD stepping motor unit is exceptionally quiet

• 67mm filter diameter for system convenience

The world's smallest and lightest1 telephoto zoom lens for Sony full-frame E-mount mirrorless cameras

The 70-300mm F/4.5-6.3 Di III RXD (Model A047) for Sony full-frame E-mount mirrorless cameras is a telephoto zoom lens designed and created so photographers of all skill levels can enjoy high quality images comfortably. Tamron’s new 70-300mm F4.5-6.3 covers a broad telephoto zoom range yet is the world's smallest size and lightest weight, coming in at 148mm (5.8 in) long with a maximum diameter of 77mm, and weighing just 545g (19.2 oz). With special emphasis on resolving power, Tamron has deployed special lens elements appropriately arranged to correct chromatic aberration, generally very strong in a telephoto lens, as well as other aberrations. Users can enjoy high-resolution images combined with the stunning bokeh qualities that are achievable only with a telephoto lens. The lens also incorporates the RXD (Rapid eXtra-silent stepping Drive) stepping motor unit, a high-speed precision AF drive system that is remarkably quiet. Tamron's Moisture-Resistant Construction provides extra protection, while various features that are built into Sony mirrorless cameras, including "Eye AF," are supported. The 70-300mm F4.5-6.3 is a versatile lens for photographing landscapes, sports and other action, pets and wildlife and more. The lens also demonstrates its potential for portrait shooting, casual snapshots and scenarios that require you to be mobile and shoot handheld, like sporting events. The apparent image compression and the close-up effects characteristic of telephoto lenses naturally amplify photographic expression. Zooming in on distant objects and making them appear closer is one of the joys of telephoto shooting. This zoom lens provides an entryway into that new world.

1 Among 300mm-capable telephoto zoom lenses for full-frame mirrorless cameras (As of August, 2020: Tamron)

A high-resolution telephoto zoom lens for Sony E-mount mirrorless cameras 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 sized E-mount Sony cameras, this zoom adds additional telephoto reach and still remains comfortable to handle. Users can enjoy shooting with even higher power telephoto effects at a maximum equivalent focal length of approximately 450mm 2.

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

Achieves the ultimate combination of light weight and outstanding optical performance

The 70-300mm F4.5-6.3 zoom’s optical design was refined via thorough simulations utilizing the latest technologies. With high priority on reduced size and weight, Tamron selected the aperture of F6.3 for the telephoto end to achieve a slim lens barrel and outstanding lightness. Taking the weight savings even further, we used a specially treated, high-strength aluminum-magnesium alloy3, the first time Tamron has used this material in the mount components of a lens for full-frame mirrorless cameras. The new design maintains excellent strength while successfully reducing weight to around 68% of previous mounts. The lens is made up of 15 elements in 10 groups with an appropriate arrangement of LD (Low Dispersion) lens elements. Eliminating waste to the extreme degree, Tamron reduced weight while still achieving very high image quality in the 70-300mm F4.5-6.3. Aberrations such as axial chromatic aberration (which tends to occur in telephoto lens designs) have been well corrected. The 300mm end, which receives particularly frequent use in a telephoto zoom, provides excellent high-resolution performance from the center of the image all the way to the corners. Stunning bokeh (intentional background blur qualities) are another remarkable feature of this new lens. Subjects are accentuated against the beautifully soft bokeh effects in the background. To suppress ghosting and flare, the lens uses Tamron's BBAR (Broad-Brand Anti-Reflection) Coating, which is renowned for its anti-reflection performance. In addition, the actuation of the lens correction features built into Sony cameras lets users enjoy enhanced performance and functions.

3 High-strength aluminum-magnesium alloy: An alloy mainly comprised of aluminum with a high magnesium content.

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

The AF drive on the 70-300mm F4.5-6.3 includes an RXD motor unit to help you stay focused on the action. RXD uses an actuator to precisely control the rotational angle of the motor, allowing it to directly drive the focusing lens without passing through a reduction gear. A sensor that precisely detects the position of the lens enables high-speed and accurate AF, which is ideal when shooting continually moving subjects or recording video. And with a focusing system that is both smooth and quiet, the 70-300mm F4.5-6.3 lets you shoot free from stress not worrying the drive sound in a quiet environment.

Built with Mirrorless in Mind

Tamron’s new 70-300mm F4.5-6.3 zoom is compatible with many of the advanced features that are specific to mirrorless cameras. This includes:

- Fast Hybrid AF

- Eye AF

- Direct Manual Focus (DMF)

- In-camera lens correction (shading, chromatic aberration, distortion)

- Camera-based lens unit firmware updates

Features vary by camera. Please consult your camera’s instruction manual for details.

As of August, 2020

Circular aperture to produce a smooth-edged bokeh

A 7-blade diaphragm is configured to retain a smooth, circular-shaped aperture opening even when stopped down by two stops from the wide-open aperture. This produces a smooth-edged bokeh in background light spots.

BBAR Coating: Advanced anti-reflection coating

The application of BBAR (Broad-Band Anti-Reflection) Coating for suppressing reflections on lens element surfaces minimizes unwanted flare and ghosting to deliver sharp, crisp, high-contrast images.

Moisture-Resistant Construction protects your lens

For greater protection when shooting outdoors, leak-resistant seals throughout the lens barrel help protect your equipment.

Technical Specifications:

Model: A047

Compatible Mount: Sony E-mount

Focal Length: 70-300mm

Maximum Aperture: F4.5-6.3

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: 67mm

Maximum Diameter: 77mm

Length: 148mm (5.8 in)

Weight: 545g (19.2 oz)

Aperture Blades: 7 (circular diaphragm)

Minumum Aperture: F22-32

Standard Accessory: Round-shaped hood, Lens caps

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