Hello tw2016.
Please check this post, about how images must be acquired for good photogrammtetry work.
Draft VS NormalVS High Detail
As for me, i don’t have any problems with objects from 5cm to 5m.
Never shot bigger or smaller, because less than 5cm is too small for iPhone camera, and too big, already required drones.
But after some discussions, looks like DSLR camera with big sensors have problem with good DOF (especially on extremely small distances), so for small objects you need shoot images with different focus for acquiring all surfaces as sharp images required for good 3D reconstruction.