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

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

Burning question about the future of photography? Want to discuss a feature or a tutorial in the magazine? Then send us your letters and photos

Our comprehensive listing of key specifications for DSLR lenses

If you’re planning to enter our Urban Life round, which launches next week, take these tips from four of last year’s top ten photographers