Control image lightness and darkness with Pixel Clipping. Pixel Clipping treats all pixels along a shade gradient of lightest to darkest. Use these settings to control what pixels are engraved at the highest power setting to render the darkest shade and where to render the lightest shade with laser power off.
Darken your image: A higher percentage in the box indicated by the light blue arrow will create darker tones in your image. If you set this value to 20, it means that pixels that are darker than 80% of the pixels in the image will engrave at the maximum laser power and render as black.
Lighten your image: A lower percentage in the box indicated by the dark blue arrow means that more of the image renders as pure white. If you set this value to 80, the lightest 20% of pixels will render as pure white.
This setting is especially helpful if you're using an image on a white background that contains some undesired, stray off-white pixels. Since the Laser Head skips over the range of pixels you tell to it treat as pure white, adjusting this setting can help you speed up your etching time.
If you load an image after adjusting the value in the left box to be greater than in the right box, the interface will freeze and you'll have to restart it. The first box should always be a lower value than the second
Scale your image up. You can make your image bigger by moving the slider, shown with an orange arrow, to the right. Or you can manually enter a value into the Scale box, as shown by the red arrow. This scales the image up relative to your given number of millimeters per pixel. Scaling up is limited by the size of your image file.
To invert your image's colors, select the Invert box indicated by the yellow arrow to check it. When the Crop box indicated by the green arrow is checked, it will crop out the image's background.
You can adjust your image's position along the X and Y axis with the X and Y positioning boxes.
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