Morning all, for many years I have used Sony a mount cameras and various lenses. Before my photographic days are over, I wanted to get a full frame and bought a used Sony a7rii and a recommended a to e convertor which has done a reasonable job. I now want to buy an e mount lens and torn between the new Sony f5-6.8, 100-400mm lens or a used Tamron f5-6.7, 150-500. Any advice appreciated.
Andy
Andy