There is definitely something to be said about the quality of pictures taken in photo booths, but the study specifically used pictures that were all of sufficie

There is definitely something to be said about the quality of pictures taken in photo booths, but the study specifically used pictures that were all of sufficiently high quality: > Photos of politicians were collected from parliaments around the world. The gender and skin tone were recorded for each photo using the Fitzpatrick skin-tone scale. Each image met the Home Office standards for a passport photo. That definitely suggests the software used for automatic image quality check simply isn't up to par.