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The KEYENCE CA-LH8 is an 8 mm C-mount machine-vision lens for image sensors up to 2/3 inch. Its F1.4–F16 aperture, 0.1 m minimum working distance and low TV distortion support wide-field inspection while retaining detail across the image.
KEYENCE publishes -0.6% TV distortion for the supported 2/3-inch format and -0.28% for a 1/3-inch format. Calibrate the completed camera-and-lens assembly when dimensional or robot-coordinate results depend on image geometry.
Verify thread condition, flange seating, focus travel and aperture locking before installation. Add the manufacturer-specified close-up ring for CV-020, CV-070, CV-035C/M or CV-H035C/M applications.
The lens supports image sensors up to 2/3 inch. A smaller sensor crops the available image circle and changes the effective field of view, so validate the camera format and working distance together.
Confirm the CA-LH8 label, 8 mm focal length, C-mount camera, sensor format, field of view and required resolving power. A visually similar lens may produce different distortion or edge detail.
Protect both optical surfaces, seat the C-mount without cross-threading, set focus and aperture under production lighting, then complete the vision program's calibration and repeatability check.