like a lot of photographers, I'm looking to cut down on carrying everything including the kitchen sink. this lens takes up very little space but it packs a punch. Its the first thing into the holdall. Should have bought it years ago.

Durable; Easily Interchangeable; Lightweight; Rugged; Strong Construction

I bought this (not from amazon) to use with my 70-200 2.8 VR2, after reading good reviews online. The thing is, there is a great impact on image quality, so much so that I just don't use it. Images are soft, even stopped down 2 stops, and lack contrast.

After reading the reviews, and recognizing there is little cost between the 1.4 and the 1.7x, I decided to get the 1.7 for my 70-200. My goal was primarily taking pictures of birds, and I knew I had to get closer to get better shots than I was getting.

It was hard enough justify $1600 on a 70-200 2.8 VR lens, spending $5500 for a 200-400 F4 VR was out of the question. Still there are times when 200 isn't quite enough reach to get the picture you want. The $420 for a TC-17E was a compromise that I could live with.

Extends focal length of certain Nikon lens by a factor of 1.7 at a cost of 1.5 F stops; Makes a 70-200 2.8 a 120-340 4.8.

Works with a limited number of Nikon's catalog of lens

Very nice accessory for a relatively fast lens (2.8 or less). Somewhat expensive, but excellent optical clarity. A great way to nearly double your reach with only a small penality in light loss.

The converter is very easy to use, and with Nikon's modern lenses it enables all functions; Optics are excellent, and very little is lost in sharpness; The 1.7 is a very nice middle ground between the 1.4 and the 2.0.

The converter is expensive; and a little inconvenient if you are in a hurry

I am taking on field photos of college lacrosse games and trying to get up close and detailed photos for the players, the school and the parents. This teleconverter allowed me to get a bit closer with my 70-200mm f/2.8 Nikon lens and make better use of the whole field.

Consistent Output; Durable; Strong Construction

Poor in Low Light

I would rate the 1.4TC as the only TC that will yield excellent results across the board. The 1.7 is a good compromise, but dont expect it to yield tack-sharp results on every lens. You need to stop many lenses down at least two stops when using this TC to achieve max sharpness.

Good reach; works flawlessly with top-quality glass

Not as sharp as 1.4TC

Coupled with fast primes this TC really shines. Outstanding IQ/AF speed with my 200 f2/300 f2.8 VR's This little addition has actually saved me thousands of dollars not having to purchase a 500...love when that happens!

One of the true perks of shootin' Nikon

None

make sure you check nikon web site to see if it work with your lens.

made my 300mm f2.7 to 520 mm

price will not work with all lense

I have not tried the new 2x but I've heard the 1.7 was the best overall lens and I can say it works perfect for me. no distortion, f stop is still fine for any thing outdoors or well lit indoors.