You are correct.
There is an adjective that describes a person that looks good in pictures. The adjective is : Photogenic.
Definition of photogenic in English:
1. (Especially of a person) looking attractive in photographs or on film.
2. Biology (Of an organism or tissue) producing or emitting light.
"We were very photogenic, apparently, as we seemed to attract many people with cameras as we congregated in one spot."