A flash diffuser based in science, not marketing hype.
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Diffuse reflection is a term used in physics to describe how an incident ray is reflected at many different angles rather than at just one angle, as in the case of specular reflection. The Profusion flash diffuser makes use of diffuse reflection in its novel dimpled bounce surfaces. The rear, left, and right bounce panels all have a dimpled surface that greatly increases diffuse reflection. The result is a noticeably softer light, while retaining its intensity. Compare this to bulky "shoot through" diffusers that absorb large amounts of energy and light, forcing the photographer to compensate in burdensome ways.
Rearward to Forward Scatter Design
The fundamental design strategy of ProFusion Flash Diffuser differs from other flash diffusers in the amount of light that it is able to scatter forward using multiple bounce panels, while retaining the majority of the energy. Alternatively, shooting through a material, such as translucent rubber decreases the intensity of the light, creating underexposure and wildly unpredictable results, coupled with an increase in the already present "electric blue" color temperature of the light from a flash/speedlight. In the world of physics, light must be increased to compensate for any intensity decrease caused by its passing through an object. This can create substantial portable energy challenges. The ProFusion flash diffuser does not shoot through a material to diffuse light, but rather bounces the light off of multiple dimpled surfaces, maintaining its intensity, while simultaneously capturing and directing the light toward its destination.
Once the light has been gathered into one general direction, thus making use of the full amount of energy, it is scattered across the horizontal plane using multiple bounce panels that soften and direct the light in the desired direction. The result is an efficient use of the relatively underpowered speedlight.