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|Weight||8 oz (228 g)|
Returning it. Did not auto focus with D800 and Tamron 18-400 lens. Manual focus ring is too loose on that lens for my taste to use and image quality was poor on test shots.
Sharp focus! Used this with my Nikkor 1000mm f/11 reflex lens for the last Eclipse. Enable me to extend out to 2000mm. Resulting photos were sharp, no flare, no aberrations. I was really surprised. All autofocus features worked are expected. Robert E Clark, Santa Monica, CA., 2017.
I bought this several months ago and have used it in various settings. It works well as a 2x teleconverter, but I give it 2 stars because the autofocus does not lock well at all. I used it to photograph the eclipse with a 400mm lens and I didn't have any problems since I was in manual focus.
Currently in use between a Nikon 500mm reflex lens and a Nikon D80 body. Modest components in today's product lines. And I had read a review that this was best as a paperweight. I am happy to report, it works great. Not Nikon optics, but a bargain and the quality at least matches that of my gear.
It is as good as I expected. Not great, but does its job most of the time. Pictures often get over-exposed. But that may happen with teleconverters, from what I understand.
A bit slow to focus, but otherwise a good teleconverter.
Good for fast lenses only. Autofocus does not work on 70-300 f/4.5-6.3 AF-P lens.
In the Owner's Manual, there are some "Specification Notes" which would have been helpful to know before purchase, and which may explain some of the issues noted by other purchasers in their ratings or descriptions: "Specification Notes - This device is designed specifically for use with TAMRON...
difficulty with obtaining any focus with my Nikon D7100 camera and various lenses. returned the item.
I use with my D7000 and FX lenses and it works very well