Primarily interested in the creation of a sense of light, colour, depth and feeling – he builds multiple thin layers of translucent colour; layer upon layer, glaze upon mark upon glaze – concealing, revealing, action, reaction, until a sense of light and depth is achieved within the process. Each layer is dragged, pulled or manipulated with various implements – the process being repeated until the painting begins to emerge. The use of interference and opalescent pigments add a further dimension to the paintings, the surface of the painting changing when viewed from different angles and varying light conditions. The work alludes to landscape and a sense of place, yet is essentially abstract. Lumsden describes his paintings as ‘Open paintings’ – open in the process of their creation, interpretation and in spirit.