Mat Collishaw’s critically acclaimed virtual reality artwork 'Thresholds' is a fully immersive portal to the first photography exhibition, held in 1839 by William Henry Fox Talbot. Collishaw has collaborated with a host of experts including: VR specialists, architectural historians and world experts on photography to restage one of the earliest exhibitions of photography. The national touring exhibition began at Somerset House and is now currently on display at Birmingham Museum and Art Gallery until 6 August 2017.