How to shoot butterfly-like eyes?

Pay attention to the eye light in the model's eyes in this photo, and you can see that there are two large symmetrical light blocks, just like the wings of a butterfly, so they are nicknamed "butterfly light". In addition, in traditional photography textbooks, for a large-area front light source whose main light is directly above the camera, the shadow formed under the nose looks like a butterfly, also called butterfly light. This idiom is often used in foreign Hollywood promotional photography. Of course, this is not the effect of digital darkroom, but the direct use of large flash in the studio. The built-in flash of the camera or the general external flash is almost inferior to the "greenhouse lamp" or "big reflector" in the presentation of eye light. Because the big flash in the studio can be combined with a large area of soft mask (also called shadowless film) to project a large light block, in addition to the advantages of stable color temperature, soft light, stable output and easy control ..., there are also many ways to play with your eyes. Like this photo, it is the effect of using the left and right ET 300W shed lights. 1. Use the "full manual" mode to shoot in the shed, set the aperture range around F8- F 1 1, and adjust the aperture according to the output and distance of the large flash. The shutter can be set to1125S2. In front of the model, two greenhouse lamps are placed left and right, and the distance between the lamps is about 1.5-2 meters. The farther the two lights are, the farther the butterfly's wings are; The closer the two lights are, the closer the butterfly's wings are. 3. According to the demand, consider whether to set the main lights, auxiliary lights, or simply light the lights evenly.