The calibration card and reference chart are used to adjust and control the camera and lens focus. It includes an integrated gray white balance card.

Product features:

• Target area: Includes a 45-degree angled line with centimeter scale.
• Bidirectional level: Facilitates correct positioning of the card.
• Sturdy base: Allows stable placement on a flat surface.
• 1/4" mounting thread: Enables attachment to a tripod or stand.
• Gray card: Located on the back and properly adjusts white balance.

The JJC calibration card is compatible with many digital cameras, allowing testing and optimization of autofocus performance.

The set includes the calibration card with base and an elegant protective case.