Thanks Alexey! But either I'm still missing something obvious, or my project has some sort of corrupion, or maybe I've even run into a bug...
I have a large, complex project with hundreds of photos taken obliquely to create a topo model of a site. I ran the initial alignment with Key and Tie point limits set to 0 (unlimited). The alignment was reporting many tens of thousands of points per photo, sometimes even over 100,000. The initial model aligned less than half the images and many were aligned improperly, needing further adjustments (I'm adding markers).
While working on these unaligned, or poorly aligned, images, I've noticed that some *non*-aligned show no grey points, some show grey points, particularly in areas where I might expect alignment with another image, and I've even seen one or two *non*-aligned images with blue dots. Images do have high-precision camera coordinates... maybe this is how a non-aligned image can show dots?
I've also found images that are aligned (though not reporting any projections) that show no grey or blue dots.
So I'm thinking that grey dots are key points in areas expected to overlap with other photos? How is the photo orientation managed in these cases?
What do blue dots in a non-aligned image mean?
Why do many images that are aligned not show any dots? These images appear to be correctly placed according to the look-through at the model, and they have very good overlap with other aligned images. However they are also not reporting any projections in the reference panel... but then I also have aligned images without projections that do show grey dots...?
Thanks!
-Eric