“It’s an instantly recognisable image: Bob Dylan, in all his mid-1960s psychedelic glory, standing outside a New York brownstone. A checkerboard scarf dangles from his neck. An inscrutable look comes across his face. If you’ve ever spent hours pouring over the double-album majesty of Dylan’s 1966 LP Blonde on Blonde, you know exactly what this image looks like. But if you ever thought that something was slightly askew about the image, you’re not wrong. A close look at the front cover shows that Dylan is slightly out of focus on the cover. It’s part of the mystique of the album – was Dylan purposefully trying to tell us something about himself with the blurry photo? Was it a comment on his famously obfuscated lyrics? Maybe he was starting to slowly resent the spotlight that captured his every detail. Could it be a reference to a drug trip? As…