Some examples I have seen from Photoscan look really interesting, There was one thing I noticed regarding texture, for example you do a 8k x 8k texture of an area it does pretty good at blending the images together to make a texture. However to me the texture looks very soft, it is like it does not use the full resolution of the images to create the texture. I am wondering if that is true?
As well looking at the UV's they look really bad, I know model can be taken into another program to make better UV's and re-project the texture onto it. But making better UV's in the first place seems to me to make the textures a lot better.