Catherine Marshall describes the elusive process of creating an intimate portrait, exemplified in John Minihan’s series on Francis Bacon

Where does that leave photographic portraitists? The challenge for them is to imbue their portraits, the effect of light through a single shutter opening, with the knowledge garnered through sitting after sitting of the painted equivalents. This is a rare achievement, only attained in Ireland by the late Fergus Bourke and, more recently by, John Minihan.