What is a Louver?

In filmmaking, so many terms are used to describe different elements, items, and situations. Perhaps you’ve heard the term louver. Ever wonder what is a louver? And what does it have to do with filmmaking? 

You’re certainly not alone! As the louver represents a unique means of light control. One that can be used in a variety of situations on the film set. 

What is a Louver?

A louver represents a ventilation or blind of sorts. That is placed across a window or door to alter the incoming light or air.

Representing horizontal slats that are angled. In such a way that direct sunshine is kept out of the area. The louver acts as a blind which can be adjusted to allow for more, or less, light to shine into the room.

Louvers are commonly used in filmmaking to control distribution of light. So that the filmmaker can properly adjust the internal lighting to their ideal hue and tone.

Subsequently, incorporating the use of blinds or louvers over the windows to block out any light source. The filmmaker is able to recreate their own faux light inside and maintain continuity and color throughout their production.

Louver Films

In addition to the use of louver blinds in filmmaking, you might hear the term louver referencing light control films.

Louver array films, and other light control film options feature unique abilities to block out light from reflecting on windows and other glass surfaces.

This is done to provide the filmmaker with a clean slate for his or her lighting for film production.

Blocking Light

Most of the time, though, when you hear the term louver used by a filmmaker or cinematographer? They’re discussing the use of blinds.

Or other cross horizontal grid like features to block light from a window or door or to adjust incoming air to a room. Paying close attention to the context in which the term is used, and what the filmmaker is saying, can help you.

To better understand whether they’re talking about a blind that is going to be used to block out or allow in light on the set. Or a type of film that is to be used to protect a glass surface and prevent light from coming in.

Don’t mistake louver with Louvre!

Louvre stands for a regal or profound place. The term louvre is commonly used to describe museums, pristine places, or elements of cinematic events that are profound.

If you hear the term louver, and you’re not sure what it means, the best thing you can do is – ask questions.

Lastly, ask whomever you hear using the term what it is exactly that they’re discussing. Because it could be one of several different things!