Born in Calcutta, Pyne was a shy introverted child who began sketching and doodling very early in life. After finishing school, he joined the Government College of Art & Craft in Calcutta. In 1959, he received his diploma in drawing and painting.

From water colour, Pyne turned to gouache and then tempera since the mid-'60s. It is from this time onwards that his figuration and palette also changed. A skeletal element was introduced into the figures while animal showed their fangs and claws. They were portrayed either as predators or victims. Dark shadows dominated his canvases offset with the use of a golden umber. Certain motifs surfaced repeatedly like boats, bits of bone, wood and other debris, dark doors and windows, birdman, Chaitanya, the leader of the Bhakti movements, animals, daggers, and so on.

He has participated in the Paris Biennale in 1969, contemporary Indian Painting, West Germany in 1970, International Festival of Paintings in France, 1975, Contemporary Art of Asia, Japan, 1980, Modern Indian Paintings, U.S.A., Contemporary India Art, UK,  1982, Visims, Calcutta, 1986. Timeless Art, Bombay, 1989. Pyne has received many awards and his works are found in many public and private collections.