How to add highlights to the local adjustment in the later stage of mobile photography?

Firstly, a single lamp holder D 1 (without any reflective or light control fittings) is placed on both sides of the model to adjust the direct background of these two light sources.

These two beams of light will be used as background light and side light. As can be clearly seen from the above picture, I used a transitional exposure background to establish a balanced white light area. But you may not have noticed it right away. I added 2-3 levels of aperture on the basis of the required aperture to get the reflected light from the background. You can see that the reflected light from the background produces a soft and comfortable lighting effect on both sides of the model's head.

Background/side light generally requires the highest amount of light among all light sources, which is why I consider it first. In other words, the maximum power output value of background/side light determines my upper limit of light consumption. So after setting the background/side light, I can set the output values of other light sources according to the upper limit of light consumption.

I used the aperture of 1 1 for this shoot. As you can see, I didn't specifically mention shutter and ISO. When shooting in the studio, the shutter is usually set to 1/200 seconds and the sensitivity is ISO 100.

In addition, it should be noted that the model stands close to the background to ensure that her cheeks can get soft light. The farther the light source is from the subject, the harder the light is. In order to create a soft light effect on the model's face, I have to make the model close to the background, about 1- 1.5 meters. Note that these lights can't hit the model directly. What I need is soft light reflected from the background, not hard light directly illuminated by the light source.

2. Arrange the main lights

The next step is to arrange the main light. Because there are symmetrical side lights on both sides of the model's face, I put the main light on the right front of the model's face.

The main lamp is a D 1 single headlamp with a white radome. This main light can not only emit soft light, but also form a beautiful round bright spot in her eyes. The main light does not need to be placed in a very high position, just slightly higher than the forehead of the model and does not enter the shooting area.

3. Arrange auxiliary lights

The next step is to dilute the shadow of the model's neck. Remember to take high-light portraits without any deep shadows!

I used a silver folding reflector in front of the model and put it under the main light, slightly lower than the camera. As mentioned earlier, the closer the light source is to the subject, the softer the light will be.

Folding the reflector creates a beautiful bright spot in the model's eyes (a small white spot under the pupil), but it does not weaken the shadow around her neck. The light reflected by the folding reflector is not strong enough, so an additional light source is needed.

Because, I added the fourth D 1 single headlight with the second generation standard (zoom) reflector.

Place it at the same height as the main light source, but directly hit the folding mirror. I installed a beehive in front of the second generation standard (zoom) mirror to further beam and prevent the scattered light from hitting the model's face. I just want the light reflected by the folding reflector to hit the model's face. The following is the renderings:

As you can see, the shadows are completely gone, and the highlights in the eyes are beautiful. Perfect. Using only hard light sources, we have created a beautiful and fully prominent portrait effect. Very bright, very simple, very direct.

4. A deeper understanding

Turning off the background light can help us further understand the role of the main light and the auxiliary light. The above effects only apply to the main lights and auxiliary lights.

I noticed that the background turned gray and the soft light on both sides of the model's face disappeared. This is still a beautiful image, but it is not a prominent portrait.