Redt Help Center

8. Auto Focus

MAGIC™-L3 has a built-in auto focusing system that auto focuses on the surface area of the material to mark with the use of a material height-sensing camera.
✽Auto focus maximum measurement height: 55mm
✽Precision: 0.5mm

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*Auto focus is an auxiliary function; the laser focus must be set when using auto focus.
*Auto focus is not available for rotary marking.

Auto focus may be unavailable or less accurate depending on the characteristics of the material.
※The conditions are summarized as follows;
-Materials that scatter laser light (Ex: Bakelite, white acryl, etc.)
-Materials that do not absorb laser light (Ex: Transparent acryl, glass, etc.)
-Red-colored materials that resemble the color of the laser light (Ex: Red-color anodizing aluminum, etc.)
-Mirrored-surface materials with high reflectivity (Ex: Chromium-plated pendants, etc.)
-Other materials where laser light appears invisible.
-Other materials on which the focus pointer is not clearly seen.


  1. Click the AF button on the top right of the screen.

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Or press the l3keypad12.png button on the L3 machine.

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  1. View the camera image in a new window.
    When autofocus initializes, the program displays the progress of the function on the screen.

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The progress of the autofocus function is also displayed on the LED screen.

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  1. To cancel autofocus function, press l3sw6.png button on the L3 machine.

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Go to the L3 Program➜