All About Teleconverters: I just uploaded a new video all about teleconverters. What they do, how they work, negative and positive impacts, how to use them, it's all there. Check it...

Steve Perry Loc: Sylvania, Ohio

I just uploaded a new video all about teleconverters. What they do, how they work, negative and positive impacts, how to use them, it's all there. Check it out:

https://backcountrygallery.com/all-about-teleconverters-tcs/

Country Boy Loc: Beckley, WV

Very informative - Thanks, I enjoyed it.

Dr.Nikon Loc: Honolulu Hawaii

Steve Perry wrote:

I just uploaded a new video all about teleconverters. What they do, how they work, negative and positive impacts, how to use them, it's all there. Check it out:

https://backcountrygallery.com/all-about-teleconverters-tcs/

Thnx Steve .. nice article .. with my D800E..D810 and my now D850 ... I have found cropping works just fine ... ,but even Regis uses a teleconverter with his 51 megapixel Canon to make his reach 800mm ..and it certainly works well for him ...

For me it is just an added $500 and an extra pc of glass ...

Steve Perry Loc: Sylvania, Ohio

Dr.Nikon wrote:

Thnx Steve .. nice article .. with my D800E..D810 and my now D850 ... I have found cropping works just fine ... ,but even Regis uses a teleconverter with his 51 megapixel Canon to make his reach 800mm ..and it certainly works well for him ...

For me it is just an added $500 and an extra pc of glass ...

One thing I didn't mention in the video is that you do tend to get a little better subject isolation when using the TC than with cropping. With the TC, you have a longer lens, slightly shallower DoF (even with the smaller max opening), and more background magnification. That's my main reason for using them on the D850 - I love subject isolation in my wildlife shots and TCs work better than cropping to get it :)

bleirer

Very informative video, thanks! One question though, my mirrorless Canon says it will auto focus to f11, so in theory I could use a 2x with the 100-400 f4-5.6 almost to the max. In practice?

Steve Perry Loc: Sylvania, Ohio

bleirer wrote:

Very informative video, thanks! One question though, my mirrorless Canon says it will auto focus to f11, so in theory I could use a 2x with the 100-400 f4-5.6 almost to the max. In practice?

In practice, I sure wouldn't want to use that combo :) F/11 is pretty bad (for many of my subjects, ISO would be through the roof - and subject isolation would be non-existent), but I also think IQ would suffer with a 2X behind a zoom lens. However, without a full test I can't say for sure - just seems like a bad idea.