Agonising over astrophotography shots? Traumatised by your next tripod choice? Send your technique and camera questions to digitalcamera@futurenet.com

This hybrid prime rounds out a series that includes 20mm, 24mm, 35mm and 50mm optics. Angela Nicholson investigates if it’s the perfect portrait lens

Andy Westlake assesses a unique telephoto lens for extreme close-up photography

Smaller, cheaper, lighter – Sigma’s updated 35mm f/1.2 lens brings better quality and usability to this moderately wide offering, says Damien Demolder

Our comprehensive listing of key specifications for DSLR lenses

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