Pia was born in Asti, Piedmont, and although he was an attorney, he was interested in both art and science and as of the early 1870s began to explore the new technology of photography. In the 1890s he was a city councillor and a member of Turin's Amateur Photographers' Club. He was a well known photographer in Turin and examples of his other photographs are now part of the historical collection at the Turin Cinema Museum. He can also be considered a pioneer in the field of photography for using electric lightbulbs in the 1890s, given that lightbulbs were a novelty in the late nineteenth century, with Thomas Edison's reliable incandescent light bulb having been invented only in 1879.