Flashing Unleashed: Creating Night Portraits with Artificial Light and Background

By Marko Bogdanovic Last updated on November 15, 2026

As soon as you photograph with flash at night, the background often turns black while the person in the foreground is overexposed. With an off-camera flash that you position away from the camera, you solve this problem and can create portraits with a setting and atmospheric light.

Play video from YouTube

The video is only loaded from YouTube when you play it – data (including your IP address) is then transmitted to YouTube/Google. More in the privacy policy

Key Takeaways

• First set the background via the exposure before you switch on the flash.
• A flash positioned far from the camera can be finely adjusted via its distance and power.
• Flashes placed to the side create modeling and shadows that give a portrait depth.
• You can deliberately emphasize existing light sources such as lamps in the background with the flash.
• A rim light from behind separates the subject from the background and looks especially natural if you don't use it too harshly.

Step-by-Step Guide

Step 1: Set the Background Before the Flash

Before you even touch the flash, switch it off and take care of the scenery. Capture the ambient light the way you want it in the final image. This is the most important principle of off-camera flash: the background is created by your camera settings, the subject by the flash. So set the exposure so that the surroundings look atmospheric, even if the subject remains too dark at that moment.

Step 2: Deliberately Darken the Background

If the background is still too bright with your first setting, you can darken it. To do so, open the aperture wide, for example to f/1.8, and lower the ISO. You then determine the shutter speed. In the video, a shutter speed of about 1/100 second is used. Make sure you don't exceed the sync speed of your camera. The manufacturer of your flash and your camera provides this value. With the setup in the video, the maximum speed is 1/125 second. A shorter time is often possible with radio triggers or special flash systems; check the documentation of your system for this.

Step 3: Check the Basis with a Test Shot

Now take a test shot without flash. Check whether the subject already gets some light and the background looks the way you want it. This is not about perfection, but about a solid foundation for using the flash. The flash should later complement the subject and not take over the entire image composition.

Step 4: Position the Flash

Now set up the flash at about head height or above and to the side of the subject. A slight side position ensures that shadows appear on the face, which give the portrait structure. Then switch on the flash and connect it to the camera via the radio trigger. This step is easily forgotten, but without an activated trigger the flash stays dark. Then take another test shot.

Step 5: Adjust the Flash Power and Distance

With the first test shot with the flash on, the image often looks far too bright. You then have essentially two options to reduce the light. The first: you lower the manual flash power. In the video, the power has already reached 1/128, the smallest adjustable value. The second option: you increase the distance between the flash and the subject. Light decreases with the square of the distance, so at double the distance, significantly. In the example, the flash is moved to about two meters away. A smaller aperture would also help, but it would make the background darker again. That is why distance is the better lever in this case.

Step 6: Vary the Position of the Subject and the Flash

Now the creative part begins. Ask your model to look in different directions, and move around yourself with the camera. Try out how the light changes when the subject stands closer to or farther from the flash. If the model moves closer to the flash, the flash will automatically hit the face more from the side. It is helpful to check after each shot how much the light changes. This phase takes some patience, but it gives you a feel for which arrangement suits your subject.

Step 7: Fine-tuning the direction of the light

As soon as the flash is positioned too far to the side, shadows quickly become harsh. Therefore, move the flash back a bit and adjust its height and angle until the face is evenly modeled. Make sure the model looks in the direction of the lamp when you work with directional light. The shadow on the face should not be too deep, otherwise the portrait looks unnatural.

Step 8: Reduce the power for even illumination

Once the light direction is right, check the brightness. The flash is often still too strong. Reduce the power or the distance a little until the light gives just a slight touch. The goal is an even light that blends into the existing mood instead of overpowering it.

Step 9: Use existing light as an accent

If there are already lamps or other light sources in the scene, you can emphasize them with the flash. Choose a lamp you like and first turn the flash off to check the exposure. If the ambient light is right, turn the flash back on and use it only as an accent. This way the image stays authentic, and the lamp becomes the visual focal point.

Step 10: Add a rim light from behind

An additional flash from behind creates a rim light that highlights the contours of the subject and separates it from the background. Place it so that it hits the hair or the shoulders from the side. Then take a test shot to assess the effect.

Step 11: Avoid light spill on the floor

With a flash from behind, light often falls on the floor, which makes the image look busy. You can prevent this by positioning the flash more to the side and slightly higher. A small change of angle is often enough. If the problem persists, change the perspective: lower the camera slightly so that less floor is visible in the image.

Step 12: Work with direct light instead of a softbox

As a third variation, you can remove the softbox. This makes the light more direct and harder. Set up the flash at an angle of about 45 degrees to the subject and test the result. The video shows that a soft strip of light often looks more natural than a shadow that is too harsh. Therefore, compare several variations before you decide.

Step 13: Select the final image

At the end, take a final image and compare it with the test shots. Often the version with a softer rim light is the most harmonious. However, you can adjust the lighting conditions at any time to your vision and the mood of the subject.

Summary ??? Night portraits with off-camera flash: combining background and artificial light

The off-camera flash is a flexible tool for nighttime portraits. You first set the background using the camera and then use the flash deliberately as a supplement. You control the light via power, distance, angle, and height, and with rim light as well as existing lamps you give the image depth and atmosphere. Experiment with different variations, because that is exactly where the creative appeal of this technique lies.

Trainer About Marko Bogdanovic Marko Bogdanovic is in his mid-thirties and works as a freelance commercial & wedding photographer/filmmaker in the Black Forest. His skills include an enormous amount of technical know-how when it comes to cameras. All courses by Marko Bogdanovic →