Why 70-180mm? Tamron explains why its Sony E-mount zoom is not a 70-200mm

Tamron 70-180mm f/2.8 Di III VXD (Model A056)

Tamron's announcement this week that it was developing a 70-180mm f/2.8 for Sony E mount mirrorless questions left everyone scratching their heads. Why weren't Tamron producing the much more obvious, and tried-and-tested, 70-200mm f/2.8 - like the ones it has been producing for DSLRs for years. After all, the 70-200mm f/2.8 is a go-to telephoto zoom for practically every professional photographer on the planet.

At PhotoPlus Expo 2019, the Tamron team gave us the thought process behind the decision to cut off the telephoto reach on its Tamron 70-180mm f/2.8 Di III VXD. And the answer, is that this relatively small change gives a significant reduction in length and weight.

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Chris George

Chris George has worked on Digital Camera World since its launch in 2017. He has been writing about photography, mobile phones, video making and technology for over 30 years – and has edited numerous magazines including PhotoPlus, N-Photo, Digital Camera, Video Camera, and Professional Photography. 

His first serious camera was the iconic Olympus OM10, with which he won the title of Young Photographer of the Year - long before the advent of autofocus and memory cards. Today he uses a Nikon D800, a Fujifilm X-T1, a Sony A7, and his iPhone 15 Pro Max.

He has written about technology for countless publications and websites including The Sunday Times Magazine, The Daily Telegraph, Dorling Kindersley, What Cellphone, T3 and Techradar.