Now tried some large garden gummi boots to scan.
Big black even surface but i can’t get it without holes.
I uploaded as a draft on Sketchfab but not published it because it’s not yet ok.
Tried several times with scanning but all with some “holes” in it.
In the same environment where i scanned earlier the small wooden cabinet, which was fine.
The boots are not shiny, have some dirt on it … garden boots 
… so no totally even black surface.
Any tips how i can overcome the artifacts?
Hi Robertus, can you show some print screens here, how does it look?
How many images did you captured? What was your capturing path?
Hi Ondre,
Yes, added some pics. Took about 142 captures … maybe too much?
Capturing path: you mean the distance? between 70 cm or closer on an iPhone 12 Pro.
edit: pics now added as jpg … pics don’t show up
It is not too much, I think it is good. But hard to say without seeing it. Thi images should be smaller than 2MB, when you want to add them here.
Were all voxels green after alignment?
Not all voxels were green, that’s why i took so much scans to get rid of the orange / red voxels.
Those red ones stays, so that’s nok but i can’t get rid of them with these mat black boots.
Tried again adding the pics here, biggest = 265 kb in jpg format from a Mac
Also, the boots don’t have to be shiny. As it is black, it could be hard to find features on these surface and then there could be a hole as a result.