I went out yesterday to shoot a light art installation in a park when I passed a pond and was almost deafened by the sound of I don't know how many frogs there. Luckily I had my zoom lens with me. The bad part was that I couldn't use a tripod since the ground was kind of muddy and it was already starting to get dark... So this is the best I got.... If photographs had sound ... those guys can be LOUD.