Panasonic Leica DG Vario-Summilux 10-25mm f/1.7 ASPH hands-on review

The maximum aperture on this standard zoom is wider than we have every seen before

Leica DG Vario-Summilux 10-25mm f/1.7 ASPH

Early Verdict

This is a remarkable wide-aperture zoom, and proof that Panasonic is still building its range of Micro Four Thirds lenses. With a constant f/1.7 aperture makes this a perfect lens for lowlight and even for astrophotography. And the stepless aperture will make this a must-have lens for videographers. We can't wait to try out a working sample


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    Maximum aperture of f/1.7 at all settings

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    Remarkably light for its specs

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    Stepless aperture ring


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    Price is currently unknown

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    On sale date is still to be announced

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We first heard of this lens back at Photokina last year, but back then this felt like a designers dream rather something that we could get our hands on. Fast forward to The Photography Show, and we have been able to get our mitts on what most be one of the most remarkable lenses to be launched in recent years.

This Micro Four Thirds lens, as is usual for the top models in Panasonic's lens line-up, bears the Leica name. But what really makes this lens special is the maximum aperture - which is a constant f/1.7 throughout its 10-25mm range. 

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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.