Some friends and I , who are far from expert photographers , were watching a sun rise the other morning , shooting some long exposures , and one of us posed the question ...
"Would it be possible to have a live view system incorporated into a Digital camera , where you can actually watch the exposure exposing as it happens , therefore allowing you to chose when to stop exposing the shot?"
I hope that makes sense ... as it is now , if we do a long exposure , the shutter opens , we wait with a black screen , it closes , processes , then the image appears .. if we mess it up we do it again .. If there were some sort of live view of the exposure happening ,, you could keep the shutter open , watch it being created , then when you like the shot / exposure , remotely close the shutter and viola , nice photo.
I am sure there is a reason this hasn't been done before .. but we couldn't think of it. :P