I recently completed field testing the "new" TC-20EIII 2x teleconverter. I have never been a fan of Nikon's TC's, but have to acknowledge when someone improves a product (and improves it this dramatically). Nikon is going to make a LOT of photographers happy with this product.

Dramatically improved image quality

Makes me wish for a new TC-14EIII and TC-17EIII

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 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.

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

Make sure you carefully read the list of lenses that this works with on the copy of the manual available at this site. I have three very common Nikkon lenses , two of them zoom lenses, and this does not fit any of them.

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.

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.

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.

An exceptional camera tool. As with all Nikon equipment, the optics are superior. The teleconverter adds weight but the pictures it provides are worth it.

Great optics

Weight