SMH, page-8

It ( drone )swoops down for a closer look,...
Even individual faces can be recognised.

Nearmap can see a Walnut from 7,000 feet up !!

That is 2 cm resolution !!

*** "We managed to complete a 2cm [resolution] survey ... to put that into context, our rival, Google Maps, their content is 10cm," he said.

"It's super high resolution and you can zoom in and see a walnut on the ground without it pixelating.

http://www.theherald.com.au/story/912902/flood-devastation-mapped-by-high-res-sky-cams/