Might as well get a "night vision" camera (which is much more cheaper than Df) don't you find it a bit funny trying to shoot in the dark without light? Either will have a lot of noise or basically one colour (black) in ur photo, better go sleep early rather waste time as even a D4 can't make it too.
Dim area ofcos you can use single point to shoot, will be much easy to get focus.
Sry if I'm wrong, but I believe no one will get a good image without the support of flashlight in the dark.
Oops sorry, my bad English. I didn't know my interpretation of dark was actually referring to shooting in dark without light or require a "night vision" camera. Paisei.
Then I think bro issic can ignore my suggestion since most bros here have no issue focusing in dim lighting.
