ASI’s video auto-focus provides a simple focus control solution when using an analog video camera and any of ASI’s products with Focus Control including standard and piezo XYZ stage systems, linear and gantry stage systems, and stand-alone MFC-2000 focus controllers.
The auto-focus system uses the spatial information present in the analog video signal to determine a focus value. Firmware algorithms then maximize this focus value by adjusting the focal position with an ASI focus drive. The autofocus option requires a standard NTSC/RS170, PAL/CCIR, or S-Video analog video signal from a camera. Auto-focus with a digital camera is possible with a dual-output camera, or by incorporating ASI’s Photoport Beam Splitter.
ASI’s auto-focus system has improved sensitivity and stability, 8X higher resolution, and incorporates an auto-calibration routine that automatically accommodates for diverse lighting conditions, specimen characteristics, and different objective powers.
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