Feeling frustrated by flashguns? Misfiring autofocus making you anxious? Send your technique and camera questions to digitalcamera@futurenet.com

£1,400/$1,498

Here are our best-buy bargain second-hand lenses to buy, as selected by the AP team and contributors

Sigma calls its latest superzoom ‘the ultimate all-in-one zoom lens’, but can a 10x zoom be an ultimate anything, asks Damien Demolder

Andy Westlake surveys the cameras and lenses released over the past year, and what they tell us about the state of the market

£799/$999