Sparhawk entered photography by learning to make
ambrotypes from R. M. Macintosh in
Northfield, Vermont and set up his own studio in Randolph, Sparhawk Studios. While he worked in photography for the rest of his life, the studio itself was located in six different downtown locations and sometimes co-located with a photography retail store and a hair salon. He was a progressive photographer, often trying new styles, and there are extant images from him in ambrotype,
tintype,
glass negative and
daguerrotype formats. He was said to be one of the first
New Englanders to use the
"dry plate" method of photography, and retouch negatives. He was listed in national registries of photography supply dealers as one of the few Vermonters in such a trade. He designed many of his own mechanisms including his own shutters for high speed photography and assisted other novice photographers with their mechanical photographic issues. The studio also sold photographic frames. He also published the works of other photographers, including a noteworthy title
Lands of Alaska, photographs by Dr. H.H. McIntire containing stereoscopic images of the
Pribilof Islands in the 1870s through 1880s highlighting or alluding to the poor treatment of the
Aleuts by the US government. Sparhawk considered stereoscopic images "the best kind of views ever made." His daughter Blanche assisted him in the studio until she was married. ==Personal life==