ShadowTail wrote:
Shoot using a drone, use a flight pattern, fly at different heights, multiple angles (to cover areas underneath trees for example), …
And overlap, overlap, overlap.
You can never shoot too many photos
Did I mention overlap?
If you have access to accurate GPS make use of it.
And make sure you have enough overlap
Thank you for reply Shadowtail.
Yeah that’s exactly what I though, but hoped it’ll be possible without drone. Is there a chance to get accurate result without it? Anyways, if we talked in number (I know it’s really hard to say, because it depends on many factors, plus the more photos the better), but what’s the minimum for let’s say 20m segment, 4m wide river? Again, I know it really depends… But want to get at least rough idea.