Quartz Crystal - Photogrammetry Showcase
129 photos taken with Canon 90D, Canon 18-55mm f/3.5-5.6 lens
Reconstruction and Diffuse map done in 3df Zephyr
Optimalization and Roughness, SSS, Clearcoat maps done in Blender 3.3
Normal and Height map done in xNormal
This was a bit of a challenge, because the quartz crystals were milky but not completely opaque and transparency isn't the best thing for the process. Also they were quite reflective which is generally a huge issue for photogrammetry. I've used polarizing filter to keep the reflections down. It wasn't cross-polarization setup which would be even better, but it worked good enough so that the further postproduction with Adobe Lightroom pretty much eliminated the problem.
Shading the object required more than just diffuse map, as in reality the crystal was a bit milky/transparent with some reflective surfaces. I created several maps to simulate its physical attributes.
