Creating Looks With The Exposure Triangle (Camera Lesson 27)
Summary: Ryan explains the exposure triangle and how to use it to create different film looks, as well as reveals its limitations.
Length: 6:17 minutes
Now that you know the tools that will help you determine proper exposure, it is time to learn how to properly expose you image. In this video I begin that process by taking a look at the exposure triangle.
So I have a question for you: between the following two exposures which one is correct? A 180 degree shutter with an ISO of 200 at a T5.6, or a 45 degree shutter at ISO 400 at a T2.8? Well that is a trick question. They are both at the same exposure level. So either one could be right or wrong, or they both could be right or wrong. That is determined by what kind of look you are after. Even though they are at the same level, they produce very different looks.
So the first question you have to ask yourself as you go out to create your image, is what do I want my footage to look like? Or an even better way to ask it is to ask what kind of image will serve the story I am trying to tell the best?
Do you want a lot of motion blur in your image or a little? If you use a longer shutter you will get more motion blur. If you use a shorter shutter you will get less motion blur.
Do you want a deep depth of field or do you want a shallow depth of field? The more you open the aperture the shallower your depth of field gets. And the more you close your aperture the deeper it gets.
As you answer these questions not only are you determining the look of the final image, but you are beginning to use what is referred to as the exposure triangle. Each choice you make when it comes to shutter, ISO, and aperture has a direct impact on the other settings and needs to be take into account. Your goal when using the exposure triangle is to create a balanced exposure that creates the look that you are after. So let’s take a look at a specific example: …