>>4317892>Sony first party glass is consistently smaller, sharper, and fasterThat's not compeltely true. Sigma and even Tamron are making lenses with better optical quality these days. I've been looking to get a long telephoto for wildlife and the general build quality is usually better on Sony lenses but optically they're either on par or slightly worse than 3rd party lenses. I'll probably still go with the Sony lens just for the internal zoom though.
