I can see the advantage of this Hires version if all the photos were taken with crisp sharpness. As can be seen some of the photos are less than ideal either because they are out of focus or lack depth of field. It seems Photosynth lets you zoom into more than 1:1. By a rough comparison, it is about 300%. So don't expect to find more detail when you zoom all the way in, you only blow up the pixels. On the other hand, you can take more photos zooming into details and knit them with Photosynth.