Fill Light Photography – Your Essential Guide

What is fill light?

Fill light is light that illuminates (fills in) shadows in a portrait. This supplementary lighting can be added to any lighting system to create a flattering effect.

Fill light, more specifically

  • Enhances shadow areas in an image
  • This reduces the overall contrast of the frame
  • This makes the final image more like what the eye sees (as opposed to the limited view provided by the camera sensor).

There are two simple ways to make fill light.

Although you technically can fill with any method (including phone screens, flashlights, and neon signs), I recommend two proven methods for filling in a portrait.


Reflectors can be used to create fill light. They are the simplest and most affordable method. They are also very versatile.

Reflectors are pieces of reflective material that can be placed in a way that bounces your main (key) light back into shadows. This creates a diffused fill effect.

A reflector is a great tool for portrait photography if you are starting. A high-quality reflector is only a few dollars. You can also make one from white cardboard or sheets. Reflectors are easy to place, quick to set up and require little to no learning. You have to move the material around next to your subject.

Flashes and studio strobes

As a fill light, you can use standard speed lights, studio strobes, or a combination of both, as well as your key light.

A dedicated fill lamp will perform the same job as a reflector. Still, with infinitely greater control: You can adjust the shape and exposure of your fill light with a level of precision that reflectors don’t offer.

Tips and techniques to master fill-light photography

This section will highlight my top tips for fill lighting. These techniques can be used with both strobe and reflector fill lighting. However, I will indicate where they do not apply to one of the methods.

Begin by learning about lighting.

Lighting Ratios may sound complicated, but they are quite simple. A lighting ratio is simply a way to tell how bright one light shines relative to another.

If your key light is twice as bright and bright as the fill light, then the lighting ratio for your key light is 2:1. If your skylight is four times brighter than your fill, the lighting proportion is 4:1. And if your key light is eight times brighter than your fill, then the lighting ratio for your key light is 8 to 1.

As fill lighting, add a reflector

If you aren’t interested in using a second flash as a fill, you can skip this section. However, as I have stressed above, reflectors are an excellent way to start fill lighting and will produce outstanding results with very little effort.

Third, position your reflector, so it is roughly in the opposite direction of your key light. Place your reflector as close to the key light as possible to achieve a low contrast effect. Move the reflector away if you want a high contrast effect. After everything is set up, you can evaluate the effectiveness of your reflector by looking at it or taking a second shot.

It is important to highlight the shadows but not eliminate them. Once you are satisfied with your shot, go ahead and begin shooting. If you find your shot too contrasty, you can move the reflector closer to take another test shot. If you feel your shot is too even, you can move the reflector further away.

Learn how to work with a second lamp

You’ll need more control over lighting as you progress as a portrait artist. Strobes are a great tool for this purpose. While they can be more difficult to use as fill lighting, they offer greater control.

Start by placing your dedicated fill light in the correct position. Next, adjust the power and determine the exposure. For this instruction, let’s assume that your aperture has been set to f/8, and your shutter speed has been set to a fixed 1/200s. Try a test shot.

You will learn to use multiple fill lights and think outside the box!

A single light is sufficient for basic fill light setups. But, you don’t have to be limited. Multiple fill lights can be used in one shot to illuminate the subject from different directions. For different light intensities, you can mix reflectors and lights.

It’s easy to get stuck with the basics and stop experimenting. You can create any lighting setup you like. Your imagination and the equipment available to you are your only limitations.

Attention to your catchlights

Catchlights are the reflected light spots that appear in your subject’s eyes. Images without catchlights can look horrible, but images with too few or poorly placed catchlights can also look awful.

As you are setting up the reflectors and lights, make sure to check your subject’s eyes. Check that the catchlights are flattering. Adjust the positions and light outputs until you achieve the desired effect. You should only then continue with your photoshoot.

Final words: Fill light in photography

You should now be able to start fill-lit portraits confidently. It’s a fundamental skill that instantly gives your images depth and dimension.

So do some practising. You’ll soon master the basics if you start slow and take it easy.

Leave a Reply

Your email address will not be published.