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Lens Calibration Focusing Test Card For Surveillance Cameras Photography Equipment
Lens Calibration Focusing Test Card
,camera Lens Focusing Test Card
Lens Focusing Test Card
The lens focusing test card is a specialized tool used for camera lens calibration. Its core function is to assist in completing lens focus calibration, back focal length detection, resolution verification, and to troubleshoot imaging problems such as pillow and barrel distortions. It is widely used for precision debugging in photography equipment, surveillance cameras, industrial vision, and other scenes.
Its common design features a fan-shaped star as the core pattern, and some models are equipped with black and white line pairs, gradient lines, and other markings. The test patterns are evenly distributed in different areas, which can cover the entire range of the image for focusing performance testing.
Core purpose:
Lens calibration: Assist in adjusting the camera lens, complete the focus accuracy calibration of the full focus range, and solve the problem of lens out of focus.
Performance testing: Verify the focal length of the lens, the resolution of each area of the image, and identify geometric distortion issues in the imaging.
Equipment calibration: It is a necessary clarity calibration tool for monitoring, industrial cameras, and film and television camera equipment after assembly.
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