Photography has been devalued. With digital cameras, it’s just too bloody easy to fire off a hundred shots of Alan and the boys ‘out on the razz’ and upload them onto Flickr the same night for the entire world to ignore. Not so long ago, you only had 36, or even 24 chances to preserve your companions’ merry antics for the ages, so a bit of thought was called for. If you were indoors things were even more fraught. ‘Denise, how many flashes are left on this?’ Yep, your housebound David Bailey could only do his thing if there was a sufficient supply of silvery plastic boxes full of wire wool to plug in the top of the camera, all the better to illuminate the alluring tableau of Auntie Jean’s paper crown slipping over her left eye with a veil of flat blue dazzle. The cube rotated four times to present a fresh bulb to the carousing throng, and then that was it, new cube please. Ooh, what a palaver! Small wonder everyone in photos from 1978 looks so damn fed up.