Photogrammetry of a burned log with cross-polarized light, a ring light, AESUB scanning spray and 180 photos through Lightroom and Zephyr on a DIY turntable.
Can't bake a photogrammetry texture onto a low-poly mesh in Blender? Export from Zephyr as OBJ, not FBX. An hour of checking settings came down to file format.
Why a photo scan comes first when reverse engineering old equipment, the tape measure mistake that taught the lesson, and a scanned Size 315 fluid drive.
A grimy hydraulic oil jug from the machine shop, photo-scanned in Zephyr, shrink-wrapped to a low-poly mesh in Blender and texture-painted. On CGTrader.
A traffic cone from 26 photos: Zephyr produced a 586,920 face scan, baked onto a simple Blender mesh in clean and dirty versions. Cycles render, on CGTrader.
Photogrammetry scans carry their own lighting. Set the Blender viewport to Solid, Flat lighting and Texture color for a natural look and a faster viewport.
A textured model from a few photos without photogrammetry: fSpy for the camera, a simple Blender mesh, baked and clone-painted photos, Materialize for maps.