Discussion Forums » Photography Equipment

Teleconverters: Nikon vs. Tamron?

Moderator: E.J. Peiker

All times are UTC-05:00

« Previous topic | Next topic »

0 people like this post

First unread post

| 7 posts |

Page 1 of 1

by Greenguy33 on Sat Aug 22, 2015 2:21 pm

Greenguy33
Forum Contributor

Posts: 42
Joined: 30 Sep 2014

Are Nikon teleconverters better at autofocusing with a Tamron 150-600 than a Tamron teleconverter?
I have tried a Tamron 1.4x and a 2x teleconverter and found it to be very poor at autofocusing.
Does the Nikon 1.4x, 1.7x and 2x autofocus 100% of the time?

0 people like this post

by Andrew Kandel on Sat Aug 22, 2015 2:56 pm

Andrew Kandel
Forum Contributor

Posts: 881
Joined: 17 Feb 2009
Location: Missoula, Montana

Visit website

I think AF performance is going to be lacking regardless of brand due to using it on a f/6.3 lens.

[url=http://www.andrewkandel.com/]Website[/url] - [url=http://wherebuffaloroam.wordpress.com/]Blog[/url] - [url=https://plus.google.com/112207995176022333771/posts]Google+[/url]

0 people like this post

by E.J. Peiker on Sat Aug 22, 2015 3:38 pm

E.J. Peiker
Senior Technical Editor

Posts: 86788
Joined: 16 Aug 2003
Location: Arizona
Member #:00002

View portfolio

Neither will work well. You are out at f/9 with the 1.4x and f/13 with the 2x once putting the TC on which is beyond what the AF system is speced for. it will focus but it will be slow and lacking in accuracy.

And then there's image quality even if you get it to focus - a TC is not meant to be used with a lens like that.

E.J. Peiker http://www.EJPhoto.com
Facebook Page: http://www.facebook.com/pages/EJ-Peiker-Nature-Photographer/

0 people like this post

by Greenguy33 on Sat Aug 22, 2015 3:59 pm

Greenguy33
Forum Contributor

Posts: 42
Joined: 30 Sep 2014

Thank you!
What is a sub-$2000 zoom lens that is a good replacement?

0 people like this post

by E.J. Peiker on Sat Aug 22, 2015 7:08 pm

E.J. Peiker
Senior Technical Editor

Posts: 86788
Joined: 16 Aug 2003
Location: Arizona
Member #:00002

View portfolio

Why do you need to replace it? The only lens significantly better that will give you the same reach is the Sigma 150-600 Sport - same focal length and aperture range as your lens but much better build, much heavier, and significantly better optics. But also not a lens for a TC. You simply can't go longer than 600mm in your budget range.

E.J. Peiker http://www.EJPhoto.com
Facebook Page: http://www.facebook.com/pages/EJ-Peiker-Nature-Photographer/

0 people like this post

by Larry Shuman on Sun Aug 23, 2015 3:31 pm

Larry Shuman
Forum Contributor

Posts: 460
Joined: 25 Nov 2009

If you are using the D800/800E/810 you can crop the sensor with DX crop with the camera. Your Tamron 150~600 becomes a 225~900mm zoom with no aperture change. Depend on light you will have 20 to 22mb files to work with. I have a Nikon 600mmF:4 VRII AFS lens and do not use tele extenders. If I need to have more reach I use the cameras crop under Image Area that is in the shooting menu. If you are going to use this with a D600 your DX file will be about 19MB. In all instances I am using 14 bit on all cameras.

0 people like this post

by billg71 on Wed Aug 26, 2015 4:17 pm