Like Richard I also use WebODM and am very pleased with it and all of the options that it offers. I did purchase the Windows installation option that makes installation easier.
I use an EVO II 8k camera for mapping in WebODM. I know if I do a double grid the rolling shutter effect (bow in the 3-d models) goes away (see WebODM's "Creating High Quality Orthophotos"). I also think using ground control will remove the bow also.
