All the subsurface engraving laser machines can engrave 2d or 3d graphics inside the crystals. If 3d human face / 3d portrait subsurface engraving business will be developed, it had better purchase a 3d camera individually. Though there is the software to convert a 2d photo to a 3d image, the converted effect is not good and it will be anamorphic severely, also the price is similar to the 3d camera. The 3d portrait file exported from 3d camera can input directly to our engraving control software for engraving.