Different results from scanner and images


I have a problem. I made an ortho from model of a building, which was crated from laser scans and aerial images. 

When I created this ortho, there were blur areas. When I created ortho only from images, there were texture. This can be seen on picture.

The settings were the same. What can be the problem?

Thanks, Ondrej

(Up - only images, down - images + scans)