He was taught calotype by his brother , John , and by the physicist David Brewster of the University of St Andrews in the late 1830s .
Adamson was keen on becoming an engineer , but ill health led to him pursuing photography .
Adamson was taught calotype by Adamson 's brother , John , and by the physicist David Brewster of the University of St Andrews in the late 1830s .
Adamson was keen on becoming an engineer , but ill health led to him pursuing photography .