I made this Titanium Fingerprint Ring. I digitized the fingerprint into vector artwork and deep laser engraved the print into the titanium ring. This is not laser marking where the image just sets on the surface - instead this laser removes metal to about 0.008" deep. It's deep enough to feel the ridges, and feels very similar to running your finger over a metal file.
I took the photo on the left, and in Photoshop replaced the background with light blue. The photographed ground shadow was weak, so I made the shadow in KeyShot using a ring model, and brought it over as a transparent layer multiplied with the blue background layer.
Then as a learning exercise, I trying reproducing the photo in KeyShot. Taking the same vector artwork used on the laser, I brought it into MoI, extruded, deformed around the ring, and Boolean diff to get the recessed fingerprint. In KeyShot I used the foam material for the black areas that are laser engraved. Each pulse of the laser blasts out a little crater, and the foam material was a good match. Using the KeyShot HDR editor, I built the HDR as best I could, and even added a pin to reproduce the diffused reflection of my camera inside the ring interior.
The ring photo has DOF due to the f-stop setting with my macro lens, butI forgot to apply DOF on the KeyShot render. Also, on close inspection, the two fingerprint patterns don't exactly match - this is because I didn't take the time to model a new ring with the exact diameter of the real ring. Anyway, it was a fun exercise.
Ed Ferguson
|