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This chunky lens is a terrific telephoto prime with an exhilarating turn of speed www.sigmauk.com

A not-so-standard, standard prime for full-frame Nikon and Sony mirrorless cameras www.viltrox.co.uk

Our comprehensive listing of key specifications for DSLR lenses

Spotlight on readers’ excellent images and how they captured them

Tim Irwin’s 3D printed 90mm lens is a whole lot better than it looks, says Damien Demolder , and it produces some useful, and fun, results