Pola-Lite

You have a shiny surface in the shot — a smartphone screen, lacquered furniture, a wet street — and the light reflects directly into your camera. A classic problem. Frosted glass would darken it, but cost you precious stops. This is where you reach for the Pola-Lite: a thin diffusion film based on polarizing material, which you can place either in front of the light source or in front of the object itself.

The principle is elegant — the film works with planes of polarization to break reflections without throttling the light intensity like conventional diffusers. You might lose half a stop to a maximum of one stop instead of a full two. The advantage is most evident with smartphone screens: instead of the hard mirror image of the softbox on the display, you get diffuse, soft light that makes the screen glow naturally without compromising the visibility of the content. This is crucial if you still need to see the screen content itself — in close-ups or when the phone displays plot-relevant information.

In practice, Pola-Lite works best at relatively short distances — under 60–80 cm from source to object. The closer the light source, the more effective the polarizing effect. At greater distances or for broader applications, Silk or finer diffusion paper is often the better choice. You can tension the film as a clip-on into the barndoor system or fix it directly onto the object with tape — just consider heat stability if you're using tungsten lights for extended periods.

A practical tip from set routine: Combine Pola-Lite with a subtle key light rim light (see Modeling Light) to maintain structure. Pure diffusion can quickly make an image look flat. White balance can also be tricky — the polarized material can occasionally cause a minimal shift towards cooler colors; therefore, performing a gray balance directly with the fully diffused setup is routine. Store the film flat or rolled; creases significantly impair its effect.