When pass-through is enabled, the DPI setting is automatically computed based on the size of the image. Let’s say you started with a 500DPI image when it was imported, and the size was 5" square. If you resized it to 10", you still have the same number of pixels, so the DPI is now 250. Any DPI or interval setting applied to a pass-through image is completely ignored, and Sean is mistaken.
It would be really nice if he’d provide a version of the script that omits the dithering step - it would allow you to do much more with the result in LightBurn, though to be honest, it’s not really necessary at all.
Try this:
- Import an image, and select it
- In the Shape Properties window, set the “Gamma” value to 0.65
- You may also wish to adjust Brightness and Contrast, depending on the image, but leave that for now
- Set the DPI to 254, speed to 120mm/sec, and choose Jarvis dither
- If you’re engraving black paint off a white surface, be sure to click Negative Image
Run that, and compare the output with what you get from Da Script.