Guides & Resources
Glossary for Filmmaking Terms
Emulsion position of the film. Holding up a piece of film, if the emulsion faces you, then the image will appear correct. If its reversed (mirror image), it is considered B-Wind.

Sensitivity to light which measures the film's speed. (Example: ASA 400.) "ASA" stands for American Standards Association.

A/B Roll Editing
Editing from two source VCRs to a third recording VCR. A switcher or mixer is used to provide effects such as dissolves.
A/B Story
"A" story is the main story/theme while "B" story refers to the background story.
Academy Aperture
The full frame of a 35mm image that is exposed by the camera. Aspect ratio = 1.33:1.
Academy Leader
AKA "S.M.P.T.E. leader." The countdown leader used at the beginning of a film which allows the lab to line up the sound.
Academy Of Motion Picture Arts And Sciences Awards
The coveted annual award, the "Oscar," which is presented to the best of the best.
Academy Of Motion Picture Sound
A UK-based organization whose aims are to promote and encourage the science, technology and creative application of all aspects of motion picture sound recording and reproduction, and to promote and enhance the status and recognition of the contribution of those therein engaged.

"Action" is called during filming to indicate the start of the current take.

Action Cut
Cutting on action or matching on action refers to film editing and video editing techniques where the editor cuts from one shot to another view that matches the first shot's action