A tool that can accurately set exposure, white balance, white point, and black point, as well as contrast, at the beginning of image editing. It can precisely correct shadow and highlight areas, far exceeding the limitations of ordinary gray cards. It not only allows you to customize the real black point, but also flexibly adjust the white balance according to the position of the main light source, achieving more accurate color reproduction.

Color usage scheme:
Upper part —— medium gray
Central China —— White
Lower part —— black
Internal - Black
Support - Black

The cube's dimensions are 50×50×50 millimeters.
The internal structure needs to be paired with a support structure that is easy to remove through openings
The support base can be directly fixed to a tripod, or it can be placed independently on a dedicated base.
A mounting space is reserved at the top, which can be used to adhere glass balls or metal balls for bearings.