Everything about Diffuser Optics totally explained
In optics, a
diffuser is any device that or spreads out or scatters light in some manner, to give
soft light. Optical diffusers use different methods to diffuse light and can include
ground glass diffusers,
teflon diffusers, holographic diffusers,
opal glass diffusers, and greyed glass diffusers.
Perfect reflecting diffuser
A Perfect (Reflecting) Diffuser (PRD) is a theoretical surface with 100%
Lambertian reflectance (does not absorb light).
Diffusers in photography
A
flash diffuser spreads the light from the flash of a
camera. In effect, the light won't come from one concentrated source (like a
spotlight), but rather will spread out, bounce from reflective ceilings and walls, thus getting rid of harsh light, and hard shadows. This is particularly useful for
portrait photographers, since harsh light and hard shadows are usually not considered flattering in a portrait.
A
diffusion filter is used in front of a camera lens to soften the image of the scene being shot.
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