how to?

[acacia]

Hi, this probably sounds simple to the majority on here, but Ive just started out with photography, I was just wondering how people manage to get photos with the object being almost completly black.. I cant find a photo at the moment how to explain it. I believe It has something to do with position of the sun. Any help and examples appriciated.

thanks
dani

 

[Sw1tchFX]

A silloette? Expose for the background instead of the subject. But the trick is that the background has to be considerably brighter than the subject.