Oz posted a nice and very helpful chart covering various MP cameras and heights above the bed in January of 2019 when the Lightburn revision was 0.9.
I have perused the various subsequent posts made since then about particular lasers, but . . .
Is there, by any chance, an updated table which includes some of the newer 16MP cameras . . . which also includes similar details about (a) the camera’s angle lens, (b) workspace area, and (c) the height above the workspace?
Do you know where I can find the chart Oz posted in January 2019?
Oh hell yeah I did that! 16MP Arducam.
Lesson learned- for max performance, you need to a specific varifocal lens because you want to zoom in so the FOV reaches to the bed corners but doesn’t waste pixels of the FOV outside that.
And you can 3D print an adjustable mount that is essentially the same as a mirror mount with a pivot corner and two fine-pitch adjustment screws to get the angle perfect.
Varifocals come in different sizes that need to match the size of the imager chip. And you need an M12 ring locking nut. More here:
I got AMAZINGLY good resolution and accuracy on a 1.6m x 1m bed, with the camera mounted inside the lid. It was much more repeatable than I thought when closing and opening again. But overall was limited by gain probs. The imager auto-adjusts its gain by the average light level in its FOV. When that was mostly well-used honeycomb, it was very black in like 80% of the FOV so it turns up the gain and the 20% I wanted to look at was pretty washed out.
I’m having a hard time finding that again myself! But I wonder if THIS PAGE is a lead and might be helpful to you…
Just get a varifocal lens and do it right
What defines a varifocal is they have a zoom function in addition to focus. So you can make it perfect. They’re pretty cheap.
Similarly, if you can’t get the camera’s mount to point dead center
It’s longer than a regular lens. I didn’t have any problem in my case, but you should check just to be sure that with the lid closed that the lens sticking out from the front of the lid can’t be hit by the head when you’re cutting on the front edge of the bed
