@Binocollector I agree it's artificial, but because of that I also think it is useful! How can anyone rate pincushioning If i only Look at landcape that is unproblematic for optics?I think that setup with all the houses and windows is a very artificial and not very usefull setting. No bino with pincushion distortion will work very well for looking at architecture.
I want to find out only 1 thing: should I send the Svbony back or not. And up to now I get 50% 'Looks ok to me' and 50% 'Looks horrible, must be faulty item'. Which shows me that we have much too few comparible pics here.
I just want to avoid sending things across the country just to get another one that’s the same. If virtually all roof binos are like that I’d accept it. If I could get better results for say 100-150 eur more, I would rather choose that.
I really don’t quite get why it should be so difficult to achieve geometric acceptable optics in a binocular today, compared to 70s Porros, and shouldn’t CA be less a problem than then also, with better coating, phase correction, and even ED glasses?
None of my cameras shows such distortion, not even the Practica 50mm SLR objective from 1950. I know that complete flatness is not wanted because of the rolling ball effect, but so strong as I see it with the Svbony (and is visible in the shots) it disturbs me. That is too much I think?