LightBurn compatible camera with optical zoom or problems with mac driver perhaps?

[bille (Anders)]

I have a Galvo UV laser which means my head is of cause center placed. I have then purched the 8MP LightBurn Camera (4K-W) 85degree camera and mounted it on the galve head, meaning that it is positioned 60cm vertically above my work area but shifted ~10cm i Y-direction.

My problem is that with the field of view of that camera, then much more than my working area of 300x300mm is within the picture. That means that when lightburn then cuts out my working area, then it becomes a very pixilated picture (PNG of dimensions 1963x1963px with a resolution of 166x166 DPI).

My idea was that by using a camera with an optical zoom of ~2 (variable preferred), then I can zoom such that only the working area is visible (and of course redoing calibration) which would then yield a much better resolution.

My second concern is that I am using a Mac, and I wonder if the Mac does not use the maximum resolution of the camera which I have seen other chats about.

Any inputs are much appreciated.

[bille (Anders)]

It seems that LightBurn does use the cameras max resolution on Mac (in contrast to Photo Booth) with the following results (image cropped, and LightBurn also applied correction):

• LightBurn on Mac: 1231x1235px @ 166 DPI
• Camera on Windows: 869 x864px @ 96 DPI

And the resulting image which might indicate a tiny bit better results on Windows, but I think that is simply caused by LightBurns lens adjustment:

[berainlb (PY)]

Are you using Custom or Default Capture system in Edit->Settings? Try swapping to see if you can get the lens calibration wizard to offer a higher resolution.

[bille (Anders)]

Hi @berainlb

I am unaware of this setting. Where do I find this as this not in the “Edit” menu (on Mac):

Of course I did my own full Camera Lens calibration and did not just import the default LightBurn one.

Thanks.

[berainlb (PY)]

@bille

Where do I find this as this not in the “Edit” menu (on Mac):

On Mac this would show under LightBurn->Preferences if I’m remembering correctly. However, there is no option to change the Camera Capture system on Mac. This is only available on Windows.

[bille (Anders)]

There is a camera resolution setting that I have set to Highest:

My thoughts are that there is no driver/resolution issue and that my problem is basically to find a more suitable camera/lens.

[berainlb (PY)]

I was specifically addressing the issue where the resolution in Windows was lower than in Mac. It’s possible that changing the Camera Capture System may alleviate that.

[bille (Anders)]

I was specifically addressing the issue where the resolution in Windows was lower than in Mac.

I appreciate that., but it was a suspicion I had. My first comment seemed to disprove that is was an issue as can be seen from the side-by-side comparison.

So I do think I am getting the best possible results with the current setup. Next step is to find a more optimal camera.

Thanks.

[parsec (FerAS)]

You could try right-click on Lightburn camera control window and export/import the camera (.lbcm file)settings from the system that best suits your needs into the other.

[bille (Anders)]

Thanks @parsec , but as I mentioned, then I don’t think the problem is camera setting/driver, but simply that the camera is not optimal for the mounting position I am using.