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by c.w. moynihan on Wed Jan 25, 2017 11:40 am
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c.w. moynihan
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I have the older series "IS" super tele's...not the series 2 versions. Is the TC1.4 lll a worthwhile upgrade over TC1.4 ll. ? The online consensus appears to be no, not worth it. Thoughts ? Thanks in advance.
Christian

[i]Cuz I'm free as a bird now and this bird you cannot change ! [/i]
 

by Lensmaster on Wed Jan 25, 2017 12:58 pm
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I do believe the mkIII has a micro processor in it to work with Newer lenses so you would be paying for something you cant use .
Rob.
 

by c.w. moynihan on Wed Jan 25, 2017 1:16 pm
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Thanks Rob !
Christian

[i]Cuz I'm free as a bird now and this bird you cannot change ! [/i]
 

by Scott B on Wed Jan 25, 2017 6:50 pm
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I agree with Rob. I have both TC's and the TC1.4III is much better on my new 100-400 but it is not any better on my older 500mm.
 

by Neilyb on Thu Jan 26, 2017 2:55 am
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What they said. MK3 works brilliantly on the 100-400 II and 200-400 (with the in built TC already on). Especially with the 5Dmk4, which is surprisingly fast focusing for a min aperture of f8! But using the 500 f4 mk1 there is not noticeable difference in either AF or IQ.
 

by chrissandys27 on Fri Jan 27, 2017 7:25 am
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Yes, another confirmation that the 1.4 III is no better on the old 500 f4 than the 1.4 II
Chris Sandys
 

by c.w. moynihan on Fri Jan 27, 2017 5:03 pm
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sbaxter2020@gmail.com wrote:I agree with Rob.  I have both TC's and the TC1.4III is much better on my new 100-400 but it is not any better on my older 500mm.

edit: I bought one for my 100-400 mk2 just in case. maybe I will sell my 600IS ver 1 and get the ver 2 for the improved IS by two stops down the road. The TC v.lll will come in handy. Thanks all.
Christian

[i]Cuz I'm free as a bird now and this bird you cannot change ! [/i]
 

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