Oh i have read the novel several times, it's one of my favourites and there is a massive difference between the two in terms of plot, character, atmosphere and such and some really great scenes are left out, such as the bee hive, the hedges etc. I like the film for what it is, just something created and based upon King's tale. I don't think Kubrick's the kinda guy to just stick with the script anyway It doesn't do the psychological depths of the novel justice though i definitely agree.