There has been a lot of chatter about the image quality of the Sony 200-600mm zoom lens when used with the new high-resolution Sony a1 camera body. My observations were limited in time and opportunity, but I don
Sony 200-600mm Lens Review: Wildlife Photography Field Test - Nature TTL
The Sony A1 and 200-600 mm G lens is a fantastic combo: Sony Alpha Full Frame E-mount Talk Forum: Digital Photography Review
Nikon - you're certainly tempting me! — NaturePhocus
Gear Review: Sony 200-600 f/5.6-6.3 G Telephoto Lens
Sony a1 autofocus is unreal (+200-600mm G) : r/SonyAlpha
Sony FE 200-600mm F5.6-6.3 G OSS Review
Sony a1 and the 200-600mm G lens – Backyard Test – PhotoPXL
Sony 200-600 vs 100-400 Comparison & Review
Nature Photography Blog
Sony Alpha Blog : My Gear as Sony Ambassador + some alternative kits