Nikon D5, 400/2.8 + 2x II TC issues...

[sk66]

I just encountered an odd behavior yesterday with this combination that I hadn't seen before with earlier cameras, and I hadn't noticed it previously on the D5. Sometimes when switching between large distances (near/far) the camera will just give the double triangle and refuse to shift focus. It's not at all consistent but frequent, and if I pump the AF it will focus fine. It happens in any of the AF-d modes greater than d-9 and regardless of which initial AF point is selected.

At first I thought maybe the AF sensor was dirty, but blowing it out hasn't helped. I did test w/ a second TC today and the results were the same.

Is there something else I should look for? Is the V-III TC likely to give better results on the D5? Any help is greatly appreciated.

 

[gramps]

Is this an older AF-S lens?

 

[sk66]

Is this an older AF-S lens?

Nope. It's the VR G prior to the current FL.

 

[gramps]

Nope. It's the VR G prior to the current FL.

Ah ok, I had problems with a 400 f2.8 AF-S with TC's on a D810 ... never resolved and Nikon couldn't explain.

 

[AdamSi]

Guessing you already given the contacts a good clean (both lens and camera)?

 

[sk66]

Guessing you already given the contacts a good clean (both lens and camera)?

I took a look at them and tried a different TC... but I guess a quick wipe certainly won't hurt anything.

 

[Unlocker]

Had no problems with my 400mm f/2.8G with 2x converter on both D500 and D810, only difference is mine is the mk iii version.

Apparently it’s quite a bit better image quality wise so probably worth an upgrade over the mk ii, not sure if it makes any difference with focussing though.

 

[gramps]

Had no problems with my 400mm f/2.8G with 2x converter on both D500 and D810, only difference is mine is the mk iii version.

Apparently it’s quite a bit better image quality wise so probably worth an upgrade over the mk ii, not sure if it makes any difference with focussing though.

Didn't know Nikon did a mk iii ... do you mean the VR version?

 

[sk66]

Didn't know Nikon did a mk iii ... do you mean the VR version?

I believe the mk III TC's are required for the newer lenses with electronic apertures.

 

[gramps]

I believe the mk III TC's are required for the newer lenses with electronic apertures.

Ah yes, confusing the TC with the lens

 

[flavio]

I believe the mk III TC's are required for the newer lenses with electronic apertures.

That's not entirely accurate, my 400 f2.8 FL ED VR works with mkII teleconverters no problem, here's a link for lens and teleconverter compatibility............

http://cdn-5.nikon-cdn.com/Assets/C...eleconverter-Compatibility/EN_Comp_chart.html

hope it helps
cheers
tony

 

[sk66]

That's not entirely accurate, my 400 f2.8 FL ED VR works with mkII teleconverters no problem, here's a link for lens and teleconverter compatibility............

http://cdn-5.nikon-cdn.com/Assets/C...eleconverter-Compatibility/EN_Comp_chart.html

hope it helps
cheers
tony

Looks like I was completely wrong...

 

[flavio]

Looks like I was completely wrong...

It doesn't matter about being wrong, I hope the link may be of help to you or others!
cheers