also
when you focus on the top face, the bottom face tends to fade away from focus fairly easily
but if you focus on the lower face, the top face tends to stay more in focus and visible.
In fact it's pretty hard to make the top face lose focus entirely.
(
mofaha ┐( ˘_˘)┌ ʅ(́◡◝)ʃ,
Fri 28 Dec 2012, 2:09,
archived)