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

£1,799/$1,799

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

Our comprehensive listing of key specifications for DSLR lenses

Well-tailored for many subjects and situations, the Nikon D850 is one of the finest DSLRs ever made