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

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

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

AP’s Technical Editor waxes lyrical about some lovely lenses from Sigma

Our pick of your best letters and some wise words from our favourite stars…