I am looking to film near a window. I was wondering if there was a certain material that can take the sun light source and spread it evenly and wider. I find that a diffuser it isn't enough is there another type of material that would spread and expand it even?

  • Is the window in shot?
    – stib
    Commented Dec 16, 2016 at 7:37
  • Define "isn't enough"--what specific issue are you having? Light level? Color? Contrast? Commented Apr 10, 2017 at 16:59

3 Answers 3


A prism would separate the light into a spectrum, which probably isn't what you want. If the window isn't visible in your shot, you could use what's sometimes called a silk, which is more often made of muslin or other semi-translucent material.

  • A "silk" (whatever its actual fiber composition) is exactly a "diffuser" which armoose said "isn't enough". Commented Dec 16, 2016 at 14:08
  • @RichardCrowley Right. But he didn't say what he used as a diffuser and given the lack of other details it certainly bears suggesting.
    – Jim Mack
    Commented Dec 16, 2016 at 18:12

You did not mention: size/area, permanent/temporary, budget, etc. etc. So, in the absense of any practical constraints, letting my imagination run wild....

I would investigate hanging a row of round acrylic ("Plexiglas") rods like a curtain which would serve rather like a big amorphous "Fresnel lens".

Else, you could use the traditional "brute-force" method used by big-budget production companies:

  1. Giant lamps outside the window focused through the opening. They commonly use expensive (and very bright) HMI lights for "punching through" sunlight levels.
  2. Big reflectors that catch extra sunlight and reflect it in through the window. Metalized reflective fabric stretched on a big frame

HMI light augmenting sunlight through window.

Reflectors to augment/redirect sunlight


How about a bedsheet over the outside of the window? Possibly along with some correcting gel to bring the color temperature closer to any other sources you want to use inside?

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