Conclusion: The difference in mapping results is not significant.
The 3D data obtained by 3D laser scanning has higher precision (up to 0.02 mm) and can restore the details of the scanned object to the largest extent, and the mapping effect is much better.
The mapping result obtained via DSLR is way better than via color 3D scanning, no matter from its color definition or color restoration, especially when 3D scanning medium or large-sized objects.
Conclusion: The 3D data obtained by 3D laser scanning restored more details of the object
(especially in the face of reflective parts, black parts, small and medium-sized parts, slender parts, etc., the scanning results will be better), and the mapping effect will be better.