The Collaborative International Dictionary of English v.0.48:
Photometrician \Pho*tom`e*tri"cian\, Photometrist \Pho*tom"e*trist\, n. One engaged in the scientific measurement of light; a specialist in photometry. [Webster 1913 Suppl.]WordNet (r) 3.0 (2006):
photometrist n 1: someone who practices photometry [syn: photometrist, photometrician]