Photo London seems much better this year, mainly because I am at last able to find my way around the labyrinthine Somerset House without getting lost in photography. Things got off to a good start when I bumped into Annie Leibovitz in reception. Actually "bumped into" isn’t quite the right expression – she and her entourage went through like an express train.

It is a very human crowd at Victorian Giants: The Birth of Art Photography. There are the slightly melancholic portraits of authoritative and bearded male Victorian eminences, among them Darwin, Tennyson, Carlyle and Sir John Herschel.

“I start out as an outsider, usually photographing other outsiders, and then at some point I step over a line and become an insider,” wrote American photographer Bruce Davidson. “I don’t do detached observation.” A large number of the images in Another Kind of Life were taken by photographers who took care to befriend their subjects.

“Let the light in” has been the fundraising slogan for the two-year project to revamp and modernise the Southbank Centre’s Hayward Gallery, and adjacent Queen Elizabeth Hall and Purcell Room. And that is just what has happened, with two triumphs at the Hayward.

It’s shameful to admit it, but it’s perhaps rather surprising that a film about a fashion photographer and designer should end up being so profoundly moving and inspiring.

What does it take to be included in the Taylor Wessing Photographic Portrait Prize exhibition? This year 2,423 photographers entered 5,717 images: 2,373 of those photographers are left wondering what it takes to make the grade. Remarks from the judges are a little on the Delphic side: "Those we have selected provoked a connection that resonated in all of us."  "It’s always tricky to whittle down to the contenders." "We simply nominated our favourite pictures…".

Along with Balzac’s Paris and Dickens’s London, Orhan Pamuk’s Istanbul now ranks as one of the most illustrious author-trademarked cities in literary history. Yet, as Turkey’s Nobel laureate told me during a Southbank Centre interview last month, he never set out to appropriate his home town as a sort of personal brand: it was simply the beloved backdrop of his childhood and youth.

Magnum was founded just after the war in 1947 as a co-operative that ensured both the quality of its members, and their clout in dealing with the media world. Its longevity is testimony to its success. The original founders were war-hardened photo journalists and included Robert Capa and David “Chim” Seymour; the first woman member was Eve Arnold, who joined in 1951.

What do conductors actually do? It's a question that concert-goers, as well as listeners and viewers of the BBC Proms, often ponder. Conductors may not make a sound, but what they certainly do is put on a performance, the minutiae of which are captured by photographer Chris Christodoulou.

Sue Steward, who died suddenly last week from a brain haemorrhage, was one of theartsdesk’s most loved members, her free spirit and her double specialism in world music and photography making her an intrinsic asset to this pioneering critics’ site in 2009. Her unfussy eye for colour and composition also influenced the early design of The Arts Desk and traces remain today.