Normal vector file contains no transparency effects.
You can find similar in my portfolio:
http://shutterstock.com/..…
Two images, one of a closed, sealed box, and the other of an open box. There are also 1, 2, 4, 16 and 64 sealed box..…
These are images from my 2010 travels I've converted with this command:
for i in *.jpg; do convert "$i" "`basena..…
This is clipart converted and broken apart that has been released into the public domain because the document says ..…