The specimen is too small to use normal macro photography. The depth of field is too shallow, so it is necessary to combine focus stacking together with the principles of SfM. For each view (about 80-120 for a full specimen) it is necessary to conduct focus stacking. The process is quite long. It takes about 3h to take all the necessary images. There are three systems that can perform this task and are (semi-)automatic. As this is quite a technical approach it is best to check the information op p45 of the 3D handbook (https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/895)