Yes, the model is very simple. It could be made more detailed by adding the white trim boards, etc. There are 10 cameras in the scene. They were all used to create the texture. I also tested texturing the model with Maximal textures count, one texture at 4096x4096 and it looked good.
Here is an image of the low poly model with the RC high poly reference mesh.
Götz, if you download the model and look at the texture of the second shorter board leaning against the shed you can see that the texture appears distorted since I didn’t create geometry for that board. Likewise the areas of ivy that are furthest from the low poly model look a little odd, but not bad.
These were photos I had taken to test a camera, but never processed in RC until I put together this example. The whole process of making the high poly in RC to making the low poly model in Blender, and texturing the model in RC was in the neighborhood of a couple of hours (with some fiddling).
Here’s a link to the RC project complete with photos, simplified mesh, and low poly textured mesh. File size around 150 MB.
http://www.digital-mapping.net/forums/CapturingReality/2018/RC_high-low_poly.zip
In the 3D view the low poly is best viewed as solid or sweet.