I am going to be teaching a couple of camera classes at work and so I have borrowed some full frame cameras to get used to shooting with them and using their menus.
It's been great!
I have used the 50mm f/1.4 lens each time and I love it. Its capabilities in low light are amazing. I really don't like using flash if I don't have to.
We took it to the park with us to try it out...