Sony FE 2.0x Teleconverter

Finally got to try this on my 70-200mm for a birding trip, and the autofocus didn't hunt as much as I feared in dim light. It’s nice that the extra glass still lets in enough light to keep shooting into dusk without cranking ISO too high.

Ever since I mounted this on my 200-600mm lens, capturing distant birds has become effortless—the autofocus remains snappy even with the extra stop. The build quality feels solid in the hand, and the way it locks into place gives me confidence it won't come loose during a hike.

I was a little nervous about losing light with a 2x converter, but on my 200-600mm for a weekend of birding, the autofocus stayed surprisingly snappy and sharp. It literally doubles my reach for sports and wildlife without weighing down my bag, which is exactly what I needed.