Now one item we don’t have time to get into is containing all that spill from lighting diffusion. On set a 4’x4’ 216 frames would be contained by 4’x4’ solids, side, top and sometimes even the bottom. But on smaller sets with smaller crews, soft boxes come to the rescue.

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Another way to create an even spread is with what is called a book light. We bounce light into a card or reflector at an angle to our diffusion, here a sheet of Lee 216. The setup is like an open book, which gives us a more even spread on our diffusion frame.

But if we shine that same light through diffusion, here this round silk that’s part of my 5-in-1 reflector, we now have a wider source of light. Light from the center, the edges, all of it, is lighting our talent. This wider source “wraps” around our subject more than a small, point source of light. It, therefore, fills in its own shadows.

You can also use the popular low budget diffusion used in the indie world forever: the shower curtain. It was so popular back in the day there used to be a gel sheet sold called shower curtain.

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Diffuse lightbulb

Adding a second layer of diffusion can help us even out the spread of light from our light source, by creating a wider source of light that then illuminates our silk.

You see, a small light comes from one direction relative to our subject. It, therefore, creates harsh shadows. It’s what we call a point source of light.

We can create our own by using 2x3’ showcard. You may be used to using a collapsible frame for bouncing sun or daylight as fill but you can also use it inside. Grifflon is a material used on bigger frames as a large bounce on exteriors.

The advantage of industry produced diffusion like 216 is it can handle the heat, especially when clothes pinned to a tungsten lights barn door. But with LED’s today and other low-heat lights like full spectrum fluorescents, heats not really much of an issue.

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Let's look at that silk again. You’ll notice a hot spot. This means our the diffusion frame, as a diffuse light source, is uneven. Our subject will be lit less evenly by this frame.

Diffused lighting examples

The curtains used are generally the liner and come in two flavors, opaque like 216 or frosted like opal. I only use the 216 lookalikes because if I’m using a shower curtain it’s because I want a big, cheap diffusion source. Frosted won’t give me a big soft source right.

What is diffusion? It’s the action of spreading light from a light source evenly so as to reduce glare and harsh shadows.

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Remember, the actual light rays don’t change. We’re just creating a wider source of light relative to our subject. So why double?

While you may think the solution is fewer lights, the answer is just the opposite. By increasing the number of fixtures, and reducing bulb intensity, you can create a more even lighting scheme that provides adequate illumination in a more attractive, cost efficient and comfortable way. Here are some practical steps you can take.

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Now, this only touches on the main types of diffusion which is probably all you need. We don’t get into grid cloth, big 20 by silks and others. Future episodes. But if you play with these forms of diffusion, you’ll be fine. Shoot tests. Play around with different materials. And Would love to see them.

Now if diffusion doesn’t change the quality of light, why do some gaffers double up their diffusion. Even some softboxes come with an extra inner layer of diffusion. I’ve even had people tell me it “doubles” the softness of the light rays. Really?

Diffuse lightphotography

Gels on a film set are generally rolls. They’re 4’ wide and 25’ long. They’re cut and taped to 4x4’ frames and other uses. Rolls are wonderful but expensive.

So how do you create diffusion? A popular theory is you just put some white diffusion material in front of your light. But here’s the thing: diffusion doesn’t change the actual waves of light, it just creates a wider source of more scattered light. The size of your light source determines how diffuse it is on your subject.

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Frosts are more transparent. Think a thin cloud layer were you can still the sun or a frosted window. They maintain the shape and beam of a light but soften its edges.

While it may seem that a space being too dark is the only real issue, there are several problems that can be associated with too much light. The goal here is to make your space as attractive and livable as possible, without sacrificing energy efficiency and design aesthetic.

Diffused lighting living room

By starting with a definition of good lighting, we can eliminate some of the misconceptions about bright lighting right away. Good lighting should provide enough illumination for the task at hand, while creating the ambiance and comfort you want in a given space. This will vary from room to room, but in general, using as much as you need and no more is a good rule of thumb.

They not only contain all the spill from your bulbs but the reflected interior sends it forward, helping to give us an even spread.

Many homeowners have a tendency to think of lighting only in terms of how much illumination it provides. While bright lighting is certainly a key in surgery suites, bright lighting is not always good lighting when it comes to your home décor. Factors such as how the light shapes the room and the interplay between light and color in your décor should also be considered. Lighting does more than just provide illumination, and by choosing the right fixtures, you can have adequate lighting for every space in your home, without attracting attention from a distant galaxy.

Diffuse LightCeiling

Diffused lighting interior design

What’s the alternative? Gel sheets. They come usually 21”x 22” square but also come in other sizes like 10”x10.” You can buy them at your camera/video store or online.

Double diffusion and a bounce card do eat up some of our light output so we have to keep that in mind. Some diffusion material can eat up 1 to 2 stops of light.

A more attractive space will get more use and provide less stress. You may find yourself more relaxed when proper lighting is introduced. The energy savings is another great benefit that you will probably notice almost immediately. Switch to new styles of bulbs wherever you can to increase this benefit. Share this news with others to help improve the lives of those around you, they will thank you for it, and that is a benefit you cannot put a price tag on.

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You can buy this material online, link in the description. You can also use fold up silks as I did from my 5-in-one kit. You can grip them in a c-stand or use this handy device to adapt them to a light stand.

I want max light output towards my talent so I use LED par bulbs that focus a lot of light in one direction, and that’s usually through my diffusion.

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You can also use tracing paper sheets like those used on china lanterns. And yes, you can use china lanterns but I only use them in a big space with high ceilings for ambient/background levels of light since they spread light everywhere.

You can buy the same nylon “silk” material used in flags. I bought a 1 yard by 60” piece that’s perfect, for a little over $7 bucks.

We’re going to talk about diffusion. We’ll look at how to use it. The different types used professionally and how you can create it with household materials.