Tamron 17-35mm F/2.8-4 Di OSD is "the lightest in its class"

Announced this morning, the new Tamron 17-35mm F/2.8-4 Di OSD is an ultra-wide lens designed to be as light and transportable as possible.

It weighs just 460g and measures just 90mm in length – the Nikon version, that is; the Canon edition is a shade longer at 92mm – but still manages to pack in an optical construction of 15 elements in 10 groups, including four Low Dispersion elements to minimise axial chromatic aberrations. 

Read more: The best Canon lenses right now

Two GM (Glass Molded Aspherical) elements are also present to cut down on distortion, and Tamron has added a BBAR coating (broad-band anti-reflection) to cut down on reflections. The lens also uses a seven-bladed diaphragm, which should produce smooth bokeh, while minimum focusing distance is 0.28m.

It boasts moisture-resistant construction too, providing a layer of protection from inclement weather. The entire surface of the front element has also received a fluorine coating, with water- and oil-repellent qualities, which should also make it easier to clean. 

The ‘OSD’ in the lens’s name stands for ‘Optimised Silent Drive’, an autofocus system that promises to operate not only quickly, but also near silently, making it useful for situations where you want to be unobtrusive. Tamron also says the lens should prove capable at tracking moving subjects.

Read more: The best Nikon DSLRs right now

Tamron anticipates firmware updates for the lens in the future, and, as such, it's compatible with Tamron’s TAP-in Console, an optional accessory that allows the lens to be connected to a computer via USB-C, thereby making it easy to download and install firmware updates. 

Tamron 17-35mm F/2.8-4 Di OSD: price and release date

The new Tamron 17-35mm F/2.8-4 Di OSD is going to be available for Canon and Nikon mounts with a price of £629 / $599. The Nikon version is going to be released on September 4, 2018, and the availability for the Canon will be confirmed at a later date. In the meantime, visit Tamron’s website for more information. 

Read more: Kickstarter campaign promises ultimate lens hood

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Jon Stapley

Jon spent years at IPC Media writing features, news, reviews and other photography content for publications such as Amateur Photographer and What Digital Camera in both print and digital form. With his additional experience for outlets like Photomonitor, this makes Jon one of our go-to specialists when it comes to all aspects of photography, from cameras and action cameras to lenses and memory cards, flash diffusers and triggers, batteries and memory cards, selfie sticks and gimbals, and much more besides.  

An NCTJ-qualified journalist, he has also contributed to Shortlist, The Skinny, ThreeWeeks Edinburgh, The Guardian, Trusted Reviews, CreativeBLOQ, and probably quite a few others I’ve forgotten.