The rationale for continuing to use it is pretty flimsy as well, so it's not like we lose much by doing away with it. It's poorly sourced, being a low resolutio

The rationale for continuing to use it is pretty flimsy as well, so it's not like we lose much by doing away with it. It's poorly sourced, being a low resolution 1970s vintage scan of a magazine print rather than the original film negatives, and the rights holders never really gave permission to redistribute it. Surely there are better test images to use even on purely technical and legal grounds.