Lens Calibration Wizard issues

[Lamb (Daniel Papsdorf)]

Hi,

I’m running Lightburn on an older iMac and using a Gweike Cloud engraver/cutter.

I’ve been trying to calibrate the camera on my Gweike but it is taking hours. I have finally got 3 of the images/positions to a score of 1 or less, but the 4th will not get to a score of less than 15. I’ve tried moving the circles pattern card in 2mm increments and then clicked on the capture button 50 times in each new position. I usually get a pattern not found or a score of 8888

Any help is greatly appreciated. It seemed like the existing posts for lens calibration issues were all locked.

Thanks,
Dan

[Atroz]

Looks like you may have the paper too far back. Suggestion: Get more of the white border in the picture too.

[Lamb (Daniel Papsdorf)]

Thanks for the reply. I’ve tried positioning the paper closer and further from the edge and had no luck.

[Atroz]

Try different sized dots. E.g. print the page smaller and/or larger.

[Lamb (Daniel Papsdorf)]

Thanks, I’ve been trying different sizes and positions and have had the score get as low as 7.9

I can’t believe that it’s normal to have to tinker for hours with dozens of different sizes and positions to get this to work?

[Atroz]

No it is not normal. It can normally be done in a few minutes. Something is wrong with your setup. I don’t know what it is off hand. maybe focus? Maybe lighting? I initially had some problems and my 2 solutions was what I gave you, change the dot size and make sure the full page was visible. After that it takes the time of moving the paper 9 times and clicking the button 18 times. I’ve never seen a score like 8888. I don’t think I even saw above 100 but I’m not sure.

[Lamb (Daniel Papsdorf)]

Thanks, I really appreciate the suggestions! Maybe it’s the camera on the Gweike doesn’t focus well, lighting, MacOs compatibility issues? Will have to start over and see

[Atroz]

I use macOS.

[jkwilborn (Jack Wilborn)]

My dot pattern printed smaller than it was supposed to.

Ended up printing out of gimp where it worked properly.