I am relatively new to aerial photogrammetry, but have been doing terestrial scanning for quiet some time now. I have a couple questions that I seem to get varying answers on when searching.
First question, is there any benefit to flying a site at varying elevations for creating ortho photos? For example, flying the site at 200 feet and then flying the same pattern at 400 feet? Does this add any value or added accuracy?
Second question, is a flat lens better than a fisheye lens? We are currently using a fisheye lense, but will be purchasing a new drone and camera and I wanted to know what your opinion was?
Thanks for your input