From the late 1970's, Sargy's experimenting with light and colour continued and his style gradually matured and asserted itself. His subjects went from Lemmons and its surrounding to Peckham Rye and family life. As Sargy's sight started to decline, he continued to pursue his study of the limits of light an colour perception.
"My paintings don't reflect in a straightforward way how I was seeing; people looking at my paintings always think that I was seeing far more than was the case. Seeing is subjective, you see in your brain, and I always saw at my best when I was painting."
- Sargy Mann, in 'Sargy Mann: Probably the Best Blind Painter in Peckham', 2008