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

£5,899/$6,599

Angela Nicholson tests the world’s first 200mm full-frame f/2 prime lens for mirrorless cameras

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£190/$199

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