photogenic (adj.)youdaoicibaDictYouDict[photogenic 词源字典]
1839, "produced or caused by light," from photo- "light" + -genic "produced by" (see genus). Originally in photogenic drawing, the early term for "photography;" meaning "photographing well" is first attested 1928, from photo- as short for "photograph."[photogenic etymology, photogenic origin, 英语词源]
photograph (n.)youdaoicibaDictYouDict
1839, "picture obtained by photography," coined by Sir John Herschel from photo- + -graph "instrument for recording; something written." It won out over other suggestions, such as photogene and heliograph. Neo-Anglo-Saxonists prefer sunprint; and sun-picture (1846) was an early Englishing of the word. The verb, as well as photography, are first found in a paper read before the Royal Society on March 14, 1839. Related: Photographed; photographing.