New leaks and more info about the upcoming Sigma 500mm f/5.6 lens

On top you can see the upcoming Sigma 500mm f/5.6 lens mounted on the Sony A1. It’s kind of an odd style…almost looks like it has some telconverter built-in or not? Anyway, I got some additional specs: Sigma 500mm f/5.6 specs: Lightweight lens…less than 1,5kg and so the lightest telephoto prime lens you can buy.…...