Always true, but you can look at it this way as well. What is the most efficient way to ensure that you do capture enough good data every time? I can run a standard plan like this that I know will work, but what if I want to make it better? Just increasing overlaps is not the answer. Capturing in multiple directions is. This is especially the case when you have obstructions like trees or in this case giant crushing and screening equipment and very steep slopes cut out at the edges. The default plan is 225ft AGL and you can see it has limited the speed to 16mph.
Here is a nadir crosshatch using the older style Auto Flight Mode app. I use this because it allows you to determine the gimbal pitch, which I set at 90. Doesn’t make sense to me why we can’t do that in the new Enhanced 3D, but that is another discussion that I am sure will be had. As you can see the logic automatically reduced the overlaps to compensate so per their recommendation it is doing what I described for you. Yet we still are getting 53 more images… and from different perspectives at the cost of 6 minutes. Also note that the speed has increased.
To take it one step further, since it pushed us just into 3 batteries I raised the AGL 5ft brought the side overlap down 1% and slight adjusted the direction to optimize the changeover between directions and got back down to 2 batteries while still maintaining the original image count. It says 3, but I know from experience it will be two. Sneaky though, think about how many more images I am going to get around the perimeter. Cross-hatch missions also help reduced warping/bowling.