Tamron Announces f/2.8 Ultra Wide-angle Zoom Lens

Tamron has recently announced the latest addition to their Sony E-Mount lenses – the 17-28mm f/2.8 Di III RXD (Model A046). Designed exclusively for Sony’s full-frame mirrorless cameras, the Model A046 offers more than just ultra-wide angles: it has a continuous, wide aperture throughout the entire zoom range.

Thanks to the f/2.8 aperture, Tamron ensures that the lens will provide high-resolution and contrast edge-to-edge throughout the entire zoom range. This comes alongside a minimum focus distance of just 7.5 inches, meaning you can get up close and personal with a lens typically designed for landscape photography.

Powered by Tamron’s RXD (rapid extra-silent stepping drive) motor, the Model A046 lens can deliver high-speed autofocus with pin-point precision whilst remaining totally quiet. This means users can shoot ‘virtually noise-free’ video, as well as in stills – a helpful feature for wildlife photographers not looking to disturb their subjects.

In terms of optical design, the new 17-28mm is constructed of 13 lenses in 11 groups, including three aspherical elements, two Low Dispersion elements, and one extra low dispersion element. Together, they help reduce the risk of chromatic aberration and other inconveniences such as lens flare.

The new lens has been constructed with a moisture-resistant construction, as well as a hydrophobic fluorine coating on the glass to prevent fingerprints and dirt. This is combined with an extremely lightweight overall build of just 14.8 ounces (420 grams), and a length of 3.9 inches (roughly 10 centimetres).

Compatible with Sony camera features such as Fast Hybrid AF and Eye AF, the lens is suitable for a wide range of photographic applications. Tamron advise to use the lens alongside their 28-75mm, which also has an aperture of f/2.8. Together, the two weigh less that 1kg and have the same filter thread size (67mm), meaning the same filters and polarisers can be used without worry.

The Tamron 17-28mm f/2.8 Di III RXD (Model A046) will be available on the 25th July 2019 for approximately $899.

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Ed Carr is a Yorkshire-born landscape photographer and nature writer. Having spent his youth in the North Yorkshire Moors National Park, he takes any opportunity to don his hiking boots and head out, camera in hand. When not out taking pictures or hastily scribbling down his thoughts, Ed’s halfway up a hill out chasing after his dog, Hendrix.

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