‘Dum Dum Boys’ is Mikael Jansson’s powerful series of portraits featuring male rock stars with lived-in faces such as Iggy Pop, Lou Reed, Nick Cave, David Johansen and Michael Stipe. For every photographer it must be a delight to have Iggy Pop in front of their lens as he is renowned, like Kate Moss, for having an incredible force of energy, with a willingness to experiment. Pop has built up a reputation for being photographed in ‘crazy’ scenarios, for example, …