Viltrox af 50mm f2 air

This high-end fast telezoom is an upgrade to a much-loved lens, but it is worth the extra money? Andy Westlake takes an in-depth look

Angela Nicholson tries out Viltrox’s first Pro-series full-frame lens, designed with portrait photographers in mind

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£5,899/$6,599

Totally exasperated about telephoto extenders? Bothered by battery life? Send your technique and camera questions to digitalcamera@futurenet.com

£3,800/$3,900