First of all, sorry for my bad English.

Well I`am making a University Work study. And I can`t find answer to following question.

At the ITU-R BT.500-11 Recomendation_500_ITU-R.pdf recomendation, at the page 4 there are table and a graphic of prefered viewing distance(PVD) from TV to observers. So the question is why the PVD is larger if the screen size is smaller, and the PVD is smaller if the screen size is larger? It does not sound logical.

Thank you!