I have been using photogrammetry for the last couple of years to create simple 3D assets. More recently I have started processing the assets though the Substance tools. The following images are works in progress as I learn to use Substance in conjunction with photogrammetry.
Quick lounge room capture
Molongolo River Cliffs - this has been used in-game
Molongolo river cliffs
Old Wood Fire Brick Kiln, Low rez version with baked maps ready for Unity
1.7m triangle version created in Agisoft
obligatory low poly barrel, screen shot from in Unity