How many watts of flash does it take to shoot a glass?

1. lighting: backlight, 200 watt flash on white background cloth, (or light behind white transparent background cloth. )

2. Main body: Place the main body (glass) in front of a bright background cloth. The bottom plate of the glass is a glass bottom plate pressed by white paper, which reflects light better and more stereoscopically.

3. Outline the edge: Stick black cardboard or other light-absorbing substances on both sides of the main body, and now you can observe the effect. You can basically see two contours. If it is not symmetrical, you can see that the background light passes through the glass by adjusting the distance between the left and right sides of the black cardboard, so that the glass shows the effect that the middle light gradually changes to the black contour lines on both sides.

4. Draw the outline edge of the cup mouth, as in step 3. Hang black cardboard on the mouth of the cup.

5. Photometry: Adjust the camera parameters and press the shutter.