The "tech" is not that exciting to be honest .. most of the work...

The "tech" is not that exciting to be honest .. most of the work is done by software - ContextCapture - we use it for our drone 3D capture processing - Nearmap fly 5cm GSD .. we fly 10mm to even 5mm or 2mm pixels .. and usually have terrestrial imagery as well - even indoors - and we even add terrestrial laser scan data for improved accuracy.

The camera set up and overall data processing must be pretty crazy - I've heard rumours about the NEA set up at Amazon. I know how long it takes us to crunch 50,000 photos into a mesh .. ;-p

No two ways about it .. 3D mesh will change a lot of industries .. 3D mesh = true orthphotos .. point clouds .. all sorts of other deliverables beyond a simple measurable mesh.