The London Open is back in 2012 for its eightieth anniversary.  This open submission triennial exhibition is a highlight now for artists London-wide, replacing as it does the East End Academy - established in 1932, open to 'all artists living and working East of the famous Aldgate Pump'.  Organised and hosted by Whitechapel Gallery, this iteration sees thirty two artists, chosen by a panel of experts, displaying a range of work that includes painting, sculpture, film, textiles, photography, installation and performance.

And what do have to look forward to this year?  Because favourite Alice Channer is hot property: she describes her body-based sculptures as 'dressing a gallery'.  These are carefully assembled constructions; fusions of Chanel with Mondrian, the utilitarian and the conceptual.  Greta Alfaro was one of the stars of New Contemporaries 2010, her HD videos creations occurring in textured, violent landscapes.

The London Open has some cache, the exhibition helped to start the careers of artists including Grayson Perry, Bob and Roberta Smith and Rachel Whiteread, whose laurel leaves crown the expanded Kunsthalle.  This is an opportunity for artists that are on the precipice of established careers to meet professional artists, curators and collectors.  And we all are their audience, supportive and expectant.

The London Open is at Whitechapel Gallery until 14 September.

Who doesn't love a bit of Lomography? Positioned as professional for the amateur photographer, it has done wonders for simplifying the process and making sure that almost anyone can take eye-catching pictures. Cameraphones, instagram be damned. Lomography is the choice for the non-professional picture taker.

The Museum of London present LomoWall, an exhibition undertaken with Lomography, and the first of its kind in the UK since 2007. The display, like the cameras, is startlingly simple and equally as attractive. Wrapped sixty-five metres around the entrance and rotunda of the museum (based, appropriately enough, in London Wall) are three hundred thousand pictures submitted by more than fifteen thousand people from thirty-two countries, all under the theme of 'inspiring and achieving in London's Olympic year'.

And the Museum of London is surely the most germane of locations, representing the most wonderful and awesome of the capital's present and history. And this is precisely what the LomoWall is: a series of individual moments of 2012 - a historic year in the history of this greatest of cities - captured and celebrated by ordinary people, inspired across the world.

LomoWall is at the Museum of London until 06 January 2013.

It's been a sound of the avant-garde for longer than you might think; electronic music has been gaining in prominence since the end of the Second World War.  Mostly, back then, it was all still one big experiment.  Musicians do have more of an idea of what they are doing now, but only because there is this rich heritage of electronica available to build upon.

Oramics to Electronica is a new exhibition at the Science Museum.  It explores the history of electronic music, from the 1950s to the present day, charting its evolution from the underground to the pop charts.  Co-produced with a group of electronica musicians, this exhibition celebrates the creative endeavour of these Brave New World artists, themselves attempting to write the future of music using electric pianos, homemade synth drums and all sorts of unique instruments made from deconstructed household appliances.

The work of three studios is showcased: Electronic Music Studios, the BBC Radiophonic Workshop and Daphne Oram all produced electronic music that broke the mould of existing forms in the 1960s and 1970s.  Oramics to Electronica is part of the Public History Project, a participatory new method of exhibition comprising experimental displays and that explore the histories that make up today's culture.

Oramics to Electronica is at the Science Museum until 01 December.