Thanks, had a play with it today, good so far.I get good results with ODM. I'm using the console version that seems easier to install on Windows than WebODM with the graphical interface. Just place the photos in a /dir/images folder, then run it, maybe have to play a bit with parameters. It wasn't as bad as I feared (provided you have enough overlap/sidelap and a few other factors)... Also it doesn't read .dng files, you have to convert them to .jpg.
I am not doing 3D, but it also looks good, but as most versions are free, expect a bit of experimentation here.
Thank you, I will take a look at those optionsReality Capture, Capturing Reality has free processing and then you can pay once you are happy to be able to download your results. They also offer a perpetual license.
Maps Made Easy has reasonable pay as you go pricing.
Pix4D is very popular with cloud and perpetual licenses.
I was a Pix4D loyalist, but am very happy with Agisoft. It has a perpetual license and cloud processing. Its tiled 3D models have improved a lot over the last couple of years. It also has local geoid support.