What's the difference between a soft umbrella and a reflective umbrella?

Soft umbrella: the light source penetrates the umbrella surface and shines on the subject. Reflective umbrella: the light source illuminates the reflective umbrella, and then it is reflected by the reflective umbrella to the main body. Because the reflective umbrella can basically be regarded as a parabola, the diffuse reflection range of the reflective umbrella is wider. Many times, reflective umbrellas are used to create a diffuse reflection area in which subjects move, such as pets and children. Soft umbrella mainly creates a soft contrast (subject VS shadow) by weakening the direct intensity of light source. From the umbrella itself, the soft umbrella is white and translucent, which can transmit light. The reflective umbrella is silver-gray, and the inner surface is coated with silver or gold reflective substances, which can hardly transmit light (although it can transmit light, the light intensity is greatly attenuated). Among them, the use of gold in portrait photography can improve the skin texture of China people, which is not good for white foreigners. In fact, the soft umbrella can also be used upside down as a reflective umbrella, and the reflected shadow is "harder" than a reflective umbrella. No matter what kind of umbrella, the farther the distance, the harder the shadow.