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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 27 Sep 2005 (Tuesday) 12:45
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STICKY: -=FAQ=- Teleconverter/T-Con Tele extender Discussion

 
sploo
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Mar 09, 2014 11:02 |  #691

hotled wrote in post #16744104 (external link)
Thanks I was looking at the Sigma version and Kenko version as well, I may go Sigma since that's the lens I will be using it on or are the others just as good or better?

The Canon 1.4x III is very good, though I believe the version II is very close (more difference with the two 2x versions apparently).

That said, the Canon TCs seem to be more strict about compatibility with lenses than 3rd party TCs.


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pwm2
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Mar 09, 2014 11:55 |  #692

sploo wrote in post #16745357 (external link)
The Canon 1.4x III is very good, though I believe the version II is very close (more difference with the two 2x versions apparently).

That said, the Canon TCs seem to be more strict about compatibility with lenses than 3rd party TCs.

Not only seem to be more strict. It just has to be more strict - since the Canon TC:s extrudes into the lens it really does require the lens to have such an opening.


5DMk2 + BG-E6 | 40D + BG-E2N | 350D + BG-E3 + RC-1 | Elan 7E | Minolta Dimage 7U | (Gear thread)
10-22 | 16-35/2.8 L II | 20-35 | 24-105 L IS | 28-135 IS | 40/2.8 | 50/1.8 II | 70-200/2.8 L IS | 100/2.8 L IS | 100-400 L IS | Sigma 18-200DC
Speedlite 420EZ | Speedlite 580EX | EF 1.4x II | EF 2x II

  
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sploo
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Mar 09, 2014 16:42 |  #693

pwm2 wrote in post #16745491 (external link)
Not only seem to be more strict. It just has to be more strict - since the Canon TC:s extrudes into the lens it really does require the lens to have such an opening.

Indeed. The 2x protrusion is pretty huge. I have the 1.4x III too but didn't have it to hand to remind myself of the size of the "bump".

I found the 2x will physically mount on a 24-70II with the lens at the long end, but the camera (a 5D3) fires the shutter then reports an error, so for whatever reason it's not keen on the combo.


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restyles
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Mar 21, 2014 15:39 |  #694

I'm sure the exact question I'm about to ask is already in this thread somewhere but without trolling through the entire thread I'm unlikely to find it. So here goes again ......

I use a 1Dmk4 together with a 300 f2.8 IS. The 300 is not the latest model. I use both a 1.4X and 2X Canon Mk2 extenders with this combination for motorsport photography. The 1.4X is excellent and quality is first class. However the 2X is a very different story. It seems that the A/F slows up so much that the hit rate suffers a lot. It [Strangely] seems to be more reliable in lower light situations. In bright strong sunlight it is at its worst. My question is would it be worth while buying the Mk3 2X extender. Would it be enough of an improvement to warrant the extra outlay on the updated extender ? Im sure someone somewhere is using the same kit as me and knows the answer. I would love to hear some comments.Thanks in anticipation.


Richard S
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butterfly2937
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Mar 22, 2014 18:21 |  #695

restyles wrote in post #16775785 (external link)
I'm sure the exact question I'm about to ask is already in this thread somewhere but without trolling through the entire thread I'm unlikely to find it. So here goes again ......

I use a 1Dmk4 together with a 300 f2.8 IS. The 300 is not the latest model. I use both a 1.4X and 2X Canon Mk2 extenders with this combination for motorsport photography. The 1.4X is excellent and quality is first class. However the 2X is a very different story. It seems that the A/F slows up so much that the hit rate suffers a lot. It [Strangely] seems to be more reliable in lower light situations. In bright strong sunlight it is at its worst. My question is would it be worth while buying the Mk3 2X extender. Would it be enough of an improvement to warrant the extra outlay on the updated extender ? Im sure someone somewhere is using the same kit as me and knows the answer. I would love to hear some comments.Thanks in anticipation.

Yes I shoot with the same lens and the 2 x III is much better. I just posted samples in this thread:
http://photography-on-the.net …?p=16777837&pos​tcount=346


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Lbsimon
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Jul 01, 2014 21:40 |  #696

I just bought a Kenko 1.4x TC, with the idea of trying to tape the three pins to allow auto focusing at F/8 on the 70D. No such luck - as soon as I tape the pins the camera immediately automatically switches into manual focus.

But I just thought: I taped the pins on the camera side of the TC, where they are flat. Maybe I should have tried to tape the pins on the lens side? Or should it make any difference?

Interesting to notice that I used the TC with a Sigma 120-400 f/4.5-5.6. The AF works until about 300mm, way after the F stop reaches 8. I guess more testing will be done over the weekend.


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hondafans
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Feb 21, 2015 20:39 |  #697

CyberDyneSystems wrote in post #2979173 (external link)
The Sigma definitely fits the Canon.. this info is in the charts on the first page of the thread.

Can the same be said for the 70-200 f/2.8 IS II?




  
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Jason ­ C
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Mar 04, 2015 10:02 |  #698

Stacked Kenko teleconverters

IMAGE: https://farm9.staticflickr.com/8592/16527540808_9407b0774a_b.jpg
IMAGE LINK: https://flic.kr/p/rbtY​59  (external link)


1D3
70-200 f/4 L
Kenko Teleplus MC7 2.0X DGX
Kenko Teleplus Pro 300 DG 1.4X
1/400th sec
f/16
560mm fl
iso 800
crop


Jason

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RodneyCyr
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Post edited over 3 years ago by RodneyCyr.
     
Mar 06, 2015 16:26 |  #699

According to AMAZON.COM, the Kenko 1.4X PRO 300 Teleconverter DGX for Canon EOS Digital SLRs is
"Discontinued by Manufacturer". So, its now or never. When I ordered one a year ago, it was $200. Although I later sent it back, I am tempted to re-order it at its new, lower price - $138.

Note - While ordering one of the last five remaining copies, I saw that the 2x converter is also discontinued.


Canon 80D, 70D, 60D, Canon 10-22EFs, 15-85EFS IS, Sigma 18-300, 70-300L IS, Canon 60mm EFs Macro, Rokinon 8mm fisheye, Rokinon 85/1.4, 550EX flash, Olympus TG2 underwater P&S
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tom0927
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Mar 23, 2015 14:51 |  #700

I was wondering if anyone's got their hands on the new Kenko Teleplus HD DGX TC - http://www.kenkoglobal​.com …lus_hd_dgx_20x_​canon.html (external link)

I'm just about to pull the trigger on getting a 2x TC and with the price of the PRO 300 and HD being roughly the same in Canada, I was wondering which would be a better choice. The PRO 300 has 7 elements vs the HD having 5 elements, but HD is newer and official spec sheet says the resolution is improved. I'd be using it on the Tamron 70-200 so I don't need support for EFS lenses.

Thanks!


70D | Canon 10-18mm | Sigma 17-50mm | Sigma 20mm f1.8 | Canon 50mm f1.8 | Tamron 90mm f2.8 Macro | Tamron 70-200 f2.8 | Speedlite 430ex II | Kenko Teleplus HD DGX 2.0x

  
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digger187
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Mar 25, 2015 18:29 |  #701

Man, for a hobbyist photographer, these forums can be quite intimidating haha. But I am looking for some experienced input.

I have a t3i. And being a hobbyist, I'm also frugal when it comes to photography. I have a Canon 75-300mm and am wondering if a teleconverter would work with my setup, as I like wildlife photography. Any help/suggestions is greatly appreciated.




  
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-=FAQ=- Teleconverter/T-Con Tele extender Discussion
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