1. Material: Cardboard 2. Weight: About 500 grams 3. Dimensions: 29 x 42 cm 4. Thickness: About 0.36 cm 5. Without hand support, can stand independently and save time and effort 6. The angle can be adjusted at will, more portable 7. Silver/Gold side: Dark side fills in light, brightens the shadow part 8. Black surface: Used to edge or weaken the dark surface light, deepen the backlight surface, and increase the picture contrast 9. White surface: Dark surface fills in light, brightens the shadow part so that the object receives the light evenly, softer than the silver surface
