Based on the size of the samples, a PC13030XS pericentric lens was selected. This model is part of the PC series by Opto Engineering®, a family of lenses designed to see the top and side of an object in perfect focus, all in one image. In particular, the PC13030XS is optimized for 1/3” sensors, with a field of view ranging from 7.5 to 55 mm in diameter and from 5 to 20 mm in height. Moreover, Opto Engineering® offers a line of dedicated lens mounts called CMHO series. In this case, choosing the CMHO080 clamp made it very easy to mount the lens into the system.