سوني SEL 200-600mm F5.6-6.3 E-Mount

My old lens struggled with distant birds, but this one resolves every feather detail crisply, even at 600mm. The ED glass really makes a difference in cutting chromatic aberration.

The reach is incredible, and the Nano coating seems to do a great job cutting down flare even when shooting into the sun. Focus snaps onto birds in flight faster than I expected for such a long lens.

The zoom ring is smooth and the Nano coating really helps in backlit situations, though it is a bit heavy for handheld shooting. Images are sharp across the whole range, which is exactly what I needed.