Hi Jan,
I understand. Thank you for providing the transmission ratio for Zeiss Dialyt 8X56. It is as I had guessed, nice!
Regarding "more transmission = better binoculars" I agree with you of course, it would make the binoculars slightly better for dawn or dusk use. My point was a) 10% more transmission doesn't mean 10% more "perceived brightness" and b) more "perceived brightness" is not always desirable. In many cases, such as when you are looking for a snow leopard in the snowy mountains of Tibet, less brightness = much better viewing experience