A direct shot of the sun with a 200mm brAun lens (yes, the same guys who made my shaver). Uncorrected, just white balanced for the greenish tint of the glass.
A rack focus from the tree to the sun. It's hard to get the dynamic range of both in the same shot. Normally the sun would just blow out and it'd read as a big ball o' white, but if it's got a different shape and you want to retain that...
Shot with a 7D with a #10 welding glass taped to the front.