I recently saw a thread on here discussing a horror film and that reminded me of an old idea I had for a horror movie. I ultimatly abandoned that idea because I wanted to focus more on my traditional written works rather then ideas for films(since I have little experence with script writing) but the thread reminded me of how much I enjoyed the idea and also got me curious about something. My old idea was highly dependent on it's visuals for it's scare factor. Much of the "horror" came in the form of disturbing visions and nightmares the protagonist had, and whenever you are dealing with visions and nightmares you are undouptly dealing with visuals. Now, film is the perfect medium for a visual-focused horror plot, but the question becomes how much of those visuals should be in the script or how much should be left up to the director? Is it alright to simply say that the main character has a nightmare and leave it up to the director to decide what that nightmare would look like or does a horror story that derives much of his scare factor from it's nightmare/vision sequences demand a script that actually gives those nightmares and visions some descriptions? If the latter, how much of a description is needed? How vauge can you make the description? Can you give the director, artists ect..a high degree of "creative freedom" or is a more concrete description needed when so much of the story's frights are dependent on these visuals? Just curious about all of this since I am not well-versed with script writing. So, anybody have something to say about this?