Thank you for the comments. I might point out that I myself discovered something new about the Zeiss Glasvisier while taking these pictures. I had not been aware previously that the very small and thin cutout in top of the front sight cover acts as guiding for the front sight cover by using the front sight blade.
I‘ve also tried to take a picture of what the soldier using this setup is seeing. I failed doing so. Interestingly the triangle from the front sight cover is all present in the sight and it seems that one has to line it up with the trapezoid shaped lense in the rear sight which is much harder to make out.
Details regarding doing the pictures:
Per the tip of a friend (and fellow member here) I originally bought the „Sanoto MK50“ light box from Amazon. This is perfect to make amazing pictures of scopes and smaller parts. The carrying case to the Glasvisier shown here were taken in this light box.
I liked the design of this light box so much that I have copied it in larger style to also hold rifles. Additionally I modified the rifle light box in the way that I have an additional third light from front bottom.
In this case I had been „lazy“. Usually I use fishing line or steel rod (from pike fishing) to hang a rifle in those to have it freely sitting without any shadows in the background. This does not apply for this rifle. I simply placed it on bottom of the light box sitting on top of a white paper box (the original Hensoldt box for the 6-24x72 military scope). You can see this by the shadow in the rifle total picture on bottom of the stock in about the middle of the rifle.
The camera used for this setup is a Canon EOS 80D. I recently had considered switching over to a Sony Alpha 7R III since I liked the idea of 42 MP, but after researching it the main advantage seems to be the smaller and lighter design of the camera, not the quality (aside of much more resolution). Since I‘m anyway only using the camera from fixed position and never carry it with me, the previously mentioned advantage therefore does not apply to my case.