By double diffusing a light, what two things do you accomplish?

By double diffusing a light, what two things do you accomplish?

• A. You make the source softer and you reduce the amount of light
• B. You make the source brighter and the color temperature shifts
• C. You focus the beam and increase intensity
• D. You change the color rendering index

Answer: (A)

Diffusion softens light by scattering photons so the light source appears larger and shadows become gentler. When you double diffusion, more light passes through more diffusing material, increasing that soft, wrapping quality while also absorbing some light along the way. The net result is a softer light and a reduction in the amount of light reaching the subject. Color temperature and color rendering index aren’t fundamentally changed by diffusion—the light doesn’t become warmer or cooler in a meaningful way, and the index isn’t driven by diffusion itself. Diffusion mainly alters how light is distributed and how harsh the shadows look. So the two things you accomplish by double diffusing are a softer light source and a decrease in light output.

Diffusion softens light by scattering photons so the light source appears larger and shadows become gentler. When you double diffusion, more light passes through more diffusing material, increasing that soft, wrapping quality while also absorbing some light along the way. The net result is a softer light and a reduction in the amount of light reaching the subject.

Color temperature and color rendering index aren’t fundamentally changed by diffusion—the light doesn’t become warmer or cooler in a meaningful way, and the index isn’t driven by diffusion itself. Diffusion mainly alters how light is distributed and how harsh the shadows look.

So the two things you accomplish by double diffusing are a softer light source and a decrease in light output.