This teleconverter is extremely sharp and gets the job done. Luckily I did have a lens that was compatible with it. It's my own fault for not doing slightly more research to find that some nikon lenses are not compatible with this device. Be sure to check before purchasing.

The only people who have had a problem with this product have not paired it with the right lenses. ((( This TC Converter is designed for fast f/2.8 lenses. ))) I have two Nikon cameras (D810 and D500) and this 2x TC III doubles my reach and keeps the quality extremely high.

This is an in-depth review of the new Nikon TC-20E III teleconverter that was released in December of 2009, along with an updated version of the Nikon 300mm f/2.8G VR II lens. The Nikon TC-20E III is a major update to the existing Nikon TC-20E II teleconverter, sporting a brand new optical design...

This converters works more 'acceptably' with wider aperture and slightly lower length lenses. I bought this to go with my AF-S 80-400mm f4.5-5.6 VR Nikkor, which the chart says is compatible, and it is but only to a point.

Works great with 70 to 200 vr2, g. Focus and vibration reduction work fine. Too bad there is only a limited amount of lenses it will work with.

It really makes my 70-200mm lens longer and heavier. But I wanted something with more reach and this teleconverter allows me to do that.

It does work and do what its supposed to do but the images are softer than I expected. I read all the reviews here and was convinced it was the right way to go. Really I can't expect this one converter added to a 70-200 VRII to take the place of any "out of the box" 400mm lens!

Durable; Easily Interchangeable; Strong Construction

Slow Focus; Soft Images

Use: Birds, Wildlife, Sports with Nikkor 70-200 f/4 lensPro: Quick auto focus, clean, clear resultsCon: None -- a great value

Durable; Easy To Use; Lightweight; Reliable

None

great extra in your camera bag! well built!

"After all the positive reviews I read I grabbed this to use with my 70-200VR2. I wasn't happy at all with the results, I got very few keepers when using it, often times I had to choose to keep the picture that was least bad of a set.