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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 10 Aug 2011 (Wednesday) 17:37
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Kenko 1.4x Pro300 DGX on the 70-200 2.8 IS II

 
Fligi7
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Aug 10, 2011 17:37 |  #1

I'm the market for an extender, but having trouble choosing one. From what I've seen, the optics on the Kenko are as good, or better, than the Canon 1.4x II. Is this generally accepted or is it an argued view? I haven't heard much on how it affects AF, though. Any first-hand experiences with this combination?




  
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tutwood
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Aug 10, 2011 17:58 |  #2

i currently have the same kenko 1.4 and use it often with the 70-200 mk 2 with no probs also have canon mk 2 1.4 tele and can confirm that the difference between the 2 are slim to none at all




  
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Fligi7
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Aug 10, 2011 18:00 |  #3

Would you mind pointing me to, or posting, some full-res sample pictures?




  
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kent ­ andersen
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Aug 31, 2011 16:19 |  #4

I am considering between Kenko and Canon to... I don't know if this is to steal the thread, but i would like to hear more oppinion on it. How big is the difference between the Canon MKIII and Kenko?


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dadgummit
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Aug 31, 2011 18:44 |  #5

Check out Silverfox's threads. He has done extensive testing with the 70-200 Mk 2 and Kenko's


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lawdog2k
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Sep 01, 2011 11:34 |  #6

dadgummit wrote in post #13032418 (external link)
Check out Silverfox's threads. He has done extensive testing with the 70-200 Mk 2 and Kenko's

Ditto. I went with Kenko because of his tests. Wouldn't hesitate to do it again.


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Fligi7
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Sep 06, 2011 11:11 |  #7

dadgummit wrote in post #13032418 (external link)
Check out Silverfox's threads. He has done extensive testing with the 70-200 Mk 2 and Kenko's

I have. Here he tests a pro 300 DG, but not the DGX:

https://photography-on-the.net/forum/showthre​ad.php?t=999626

I'm asking because the DGX is $249 and the Canon 1.4x II is $300. As they are very close in price, if the Canon AF's much better than the DGX, then I'll be going with the Canon. However, I've yet to hear how good or bad the DGX 1.4x AF is.




  
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RAH1861
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Sep 06, 2011 12:21 as a reply to  @ Fligi7's post |  #8

I have the Kenko converter you are asking about. Concerning AF, one thing I can tell you is that it functions without taping the pins, even on a lower-quality body like my 60D, even if your lens then is slower than 5.6.

As far as how it functions with the 70-200, I don't know, but my 60D was very poor at AF with the TC and my Tamron 70-300. The lens more often than not failed to achieve focus and hunted a lot. If conditions are really bright and very contrasty, sometimes it would work.

With it on my Canon 400 5.6 lens, it is also kind of uncertain. The lens won't hunt, it just sits there and does nothing. With full-time manual override, I can get it close to focus and then sometimes the AF will take over and achieve focus. In bright, contrasty conditions, it will sometimes work OK, but it seems very unreliable. I think it might be good to use for situations where you know it will be bright and you need the reach and you have plenty of time - say ducks on a pond. Can't hurt to try it.

Edit: I just reread the thread and see that the lens in question is a 2.8, so the TC would probably work better with that, since you won't exceed 5.6 anyway. I'll leave my posting in place, just FYI.


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Sep 06, 2011 15:11 |  #9

Fligi7 wrote in post #13058951 (external link)
I have. Here he tests a pro 300 DG, but not the DGX:

https://photography-on-the.net/forum/showthre​ad.php?t=999626

I'm asking because the DGX is $249 and the Canon 1.4x II is $300. As they are very close in price, if the Canon AF's much better than the DGX, then I'll be going with the Canon. However, I've yet to hear how good or bad the DGX 1.4x AF is.

The only difference between the original DG & DGX is the internal circuitry as the optics & AF response are identical whether its the Pro300 or MC4 model. The Pro300 simply has one more element.

Reputable dealer below:

http://www.ebay.com …enses&hash=item​27b4a57249 (external link)

TBH if you dont need weather sealing and the 1.4 extender will be used on a lens such as the 70-200MKII that dont suffer from CA i would buy the Kenko 1.4 MC4 DGX below which is rated very good:

http://www.bhphotovide​o.com …TelePlus_MC4_AF​_1_4X.html (external link)

http://www.traumfliege​r.de …elekonverter/ov​erview.php (external link)

Regards, Ron ;)


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Fligi7
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Sep 06, 2011 15:36 |  #10

As always, Ron, your input is very much appreciated on the subject of extenders. Weather sealing isn't much of a concern when I'll be using this. From the traumflieger site's test, it appears that the MC4 DGX has the best optics of the bunch, which is surprising that it bests Canon's new 1.4x mkIII.




  
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RAH1861
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Sep 06, 2011 15:39 |  #11

Fligi7 wrote in post #13058951 (external link)
the DGX is $249 and the Canon 1.4x II is $300.

Sometimes you can get a good deal on the Kenko. I bought mine on Amazon for $219 two weeks ago. It was one of those independent sellers who go through Amazon, and their lower price shows up on the page as the primary thing to buy. So I did.

The price was up to $229 in a few days, so it varies all over the place. Very odd but you should try it every day if you want one.


Rich
Canon 80D; 60D; SL1; Canon 60mm; Canon 400mm f5.6L; Canon 1.4 II teleconverter; Canon 10-18 STM; Canon 55-250 STM; Tokina 12-24; Sigma 17-50; Sigma 17-70; Sigma 18-250; Bower 35mm; Tamron 70-300; Pro-Optic 8mm fisheye

  
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twoshadows
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Sep 06, 2011 20:10 |  #12

I will be selling my Sigma 1.4x and moving to the Canon 1.4xIII soon. Reason is that I moved from using it exclusively on a 1.6x crop to using it mainly on 1.3x and some on FF. Also I plan on using it a lot now that I have the 70-200 II, so I want something extremely durable.


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Fligi7
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Sep 19, 2011 18:36 |  #13

Silverfox1 wrote in post #13060067 (external link)
The only difference between the original DG & DGX is the internal circuitry as the optics & AF response are identical whether its the Pro300 or MC4 model. The Pro300 simply has one more element.

Reputable dealer below:

http://www.ebay.com …enses&hash=item​27b4a57249 (external link)

TBH if you dont need weather sealing and the 1.4 extender will be used on a lens such as the 70-200MKII that dont suffer from CA i would buy the Kenko 1.4 MC4 DGX below which is rated very good:

http://www.bhphotovide​o.com …TelePlus_MC4_AF​_1_4X.html (external link)

http://www.traumfliege​r.de …elekonverter/ov​erview.php (external link)

Regards, Ron ;)

Just purchased the 1.4x MC4 DGX. Should arrive this week in time for testing at a swim meet this weekend.




  
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Fligi7
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Sep 22, 2011 23:00 |  #14

Just posted up two very simple comparison pics.

https://photography-on-the.net …/showthread.php​?t=1096144




  
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Kenko 1.4x Pro300 DGX on the 70-200 2.8 IS II
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