The only reason to keep it is that I don't think digital cameras can do this:
http://static.flickr.com/10/12058549_1dfedbae07_m.jpg
That is called 'timed exposure' or 'bulb exposure'.
http://static.flickr.com/10/12058549_1dfedbae07_m.jpg
That is called 'timed exposure' or 'bulb exposure'.