posting Blu Ray screen caps???

Hey everyone. I have some questions about posting screen captures of props, in this case a book prop.

I have gone through and taken screen caps of every page in a rather short book prop and need to know if that is something that I can post here or if screen caps like that are frowned upon. I have read the section in the terms of service regarding copyrighted material, but also see screen caps getting posted in other threads.

If a mod can answer this for me. :thumbsup

Thanks,
Avolow.