The settings are based on the material surface , common sense in 3D scanning objects that are made from materials that absorbs in this case blue light needs higher laser settings and slightly higher exposure .
Example ,
White objects
Depth 1
Laser Brightness 5.
Gray objects
Depth 2
Laser brightness 7
And how darker it gets how higher the settings .
Remember red color is nothing else but middle gray so it will require much higher settings .
Black plastic is made from oil , oil absorbing very much must light source , it need the highest settings .
But black cotton absorb as much as white cotton so there is not difference at all , because it is not much about color , but about what the material is made off.
White wax will be as much absorbend as middle gray or more , physics in the work here .
Then you gave yellow, orange and brown colors that actually a driving blue light the most and need the highest settings .
But I will not get crazy about with the depth exposure , choice first the proper setting for surfaces from the menu … This means laser brightness first , if is not enough add manually higher level , and avoid too high Depth exposure , laser brightness is most important .
Hopefully in the next Deck Metro build the Auto settings will be back so all you will have to do is point on the surface and let the Auto mode control its brightness .
But it is worthy to learn about scanning surfaces and how it works in practice to avoid frustrations, professionally you should use 3D spray on your surfaces and care less about the settings , but if you want to save money and time scanning without it , a little learning and practice pays off .
Don’t skip this tips , you will need it in each new scanning session.
If anything just ask , I would be more than happy to give you another tip if needed.