# The Inverse Square Law

Lesson 8 from: Understanding Light & Light Modifiers

Mark Wallace

# The Inverse Square Law

Lesson 8 from: Understanding Light & Light Modifiers

Mark Wallace

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## Lesson Info

### 8. The Inverse Square Law

The distance of our light from our subject can dramatically affect our lighting. Using the Inverse Square Law, you can control how much light is falling on the background, light large areas, and control background shadows. Mark explains the Inverse Square Law and then demonstrates the many ways you can use it to your advantage.

Lesson Info

The Inverse Square Law

Now it's time to talk about one of my favorite things in photography. It's called the inverse square law. And once you've mastered this, it will really change the way you take photos and understand light. And so first, let me just read to you the Wikipedia definition of the inverse square law. I've got a slide for this and it says that in physics an inverse square law is any physical law stating that it is a specified physical quantity or strength and it's inversely proportional to the square of the distance from the source of that physical quantity. Okay, so, uh, that doesn't help us at all. So, a different mark Wallace Layman's term version of this says that the inverse square law when it comes to light is that the strength of the light is inversely proportional to the distance of the light to the subject. So let me show you using graphs and charts what that means. So, I have this fancy graph. So let's say over here on the left hand side, we have a light. And on the bottom of this gr...

## Class Materials

Bonus Materials with Purchase

Frio Grasp Mini Discount.pdf
Pop Quiz.pdf
Sample Photos for Pop Quiz.zip
Tether Tools Pro Kit Discount.pdf
Tether Tools Starter Kit Discount.pdf
Understanding Light and Modifiers-presentation.pdf
NanLite_WALLACE5.pdf

## Ratings and Reviews

###### user-a07413

Wow, Impressive with lots of information on light modifiers. Lots of variations of use and the bonus material. Mark is very good as a teacher. Glad I purchased the subscription plan so I can see the other Mark Wallace classes. Now to go to work and use the information.

###### Paul

I've heard much of this before, but this class really does a good job explaining and demonstrating the principles and techniques it covers. Mark is certainly quite knowledgeable, and he makes the material accessible and easy to grasp. It does cover quite a lot of ground, and while others may go into more detail, I think this class is great for building a good foundation.