stuntmonkey: It still amazes me that they considered the roof of the pentaprism a viable area to house circuit boards. So much crammed in there.
If you think that's amazing then take a look at this:
http://cypresslin.web.fc2.com/Memo/M-PentaxMX.html(a camera from 1976)
I never thought there were so many elements between the pentaprism and the case