An often overlooked technique are the “warm” or “cool” looks. These techniques can be achieved using editing techniques and grading now, however they were once an in camera effect.
Stylistically, these tones were/or have been achieved with film stock and lighting. The “Warm” look was achieved using daylight lighting with Tungsten film stock (think early Guy Ritchie films like Lock, Stock or Snatch).
Payback – Trailer:
Granted the use of filters can and does go a long way to also achieve these looks, but for the ease of lay explanation, that is basically it.
For more in-depth information check this out:
Understanding Colour Temperature
Here’s a video comparison:
Meanwhile, over at Sploid, here is the original post, with the video from above:
Compare warm and cool scenes in movies, side-by-side