This is not only the case for this tag, but for all tags.
Should we document which values are valid for which camera's. And with valid a mean
proven. This is a tremendous job.
But in the other hand an example:
Tag: $0009 ImageSize for Pentax, we though we next was valid (comparison IDF and
makernote values)
8 = 2560x1920 // S50, S55, S5i
22 = 2304x1728 // S4, S40, S45, S4i, S5n
But making pictures with a Optio S6 showed:
8 = 2304x1728 //S6 verified
22 = 2592x1944 //S6 verified