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5D Mark III + 100-400L + Kenko 1.4X DGX Autofocus?

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Thread started 07 Oct 2012 (Sunday) 11:43   
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Elfstop
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If you have never used the combo the OP mentioned...how can you have any opinion?

Post #46, Nov 27, 2012 20:38:03




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jhayesvw
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I was replying to Kitlens, the person who posted before me.
I was not replying to the OP.

Post #47, Nov 27, 2012 23:37:44 as a reply to Elfstop's post 2 hours earlier.


Jeremy
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Elfstop
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Then what I said does not apply to you..how did you git that it was?

Post #48, Nov 28, 2012 06:36:16




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recrisp
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Elfstop wrote in post #15298971external link
Then what I said does not apply to you..how did you git that it was?


The reason he (Jeremy) probably thought you meant him is, you didn't quote who you were referring to, his reply was immediately above your post. Had you quoted who you were referring to, there would have not been any question.

I promise, this may sound as though I am being rude, but I am just saying how it reads from here. :) Please don't think that I am being a jerk, I am just trying to help clear things up.

Randy

Post #49, Nov 28, 2012 06:56:51


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recrisp
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kit lens wrote in post #15294279external link
I've been doing some research on this myself, and I am contemplating the Kenko MC4 2X extender paired with my 100-400L and my 1D3. Hmm....


I have a 2X converter and a 1.4, both are Kenko brand, I LOVE my 1.4 with my 1DIV, (with my 100-400mm) but not so much the 2.0. The 2.0 I only use for documenting things, I still get it out sometimes hoping that it will work better, but no so far.
Now, I have the Kenko 1.4 300, which is the good one, my 2.0 is not the top of the Kenko line, so that means a lot.

By that I mean, if you can, please try out the 2.0 first if you can so you don't invest your money, expecting really good quality.
I have seen people have REALLY good results using TWO 1.4 300 Kenko converters though, (stacking) Duane (I think) has used a Canon and Kenko brand to take his sharp eagle shots using a 1DIV.
Your 1DIII should be the same, so you may consider that.
Before I anyone thinks I have not tried that, I haven't, I just remember reading that, and seeing the shots, I was more than impressed. :D

Randy

Post #50, Nov 28, 2012 07:05:45


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Duane ­ N
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recrisp wrote in post #15299047external link
I have a 2X converter and a 1.4, both are Kenko brand, I LOVE my 1.4 with my 1DIV, (with my 100-400mm) but not so much the 2.0. The 2.0 I only use for documenting things, I still get it out sometimes hoping that it will work better, but no so far.
Now, I have the Kenko 1.4 300, which is the good one, my 2.0 is not the top of the Kenko line, so that means a lot.

By that I mean, if you can, please try out the 2.0 first if you can so you don't invest your money, expecting really good quality.
I have seen people have REALLY good results using TWO 1.4 300 Kenko converters though, (stacking) Duane (I think) has used a Canon and Kenko brand to take his sharp eagle shots using a 1DIV.
Your 1DIII should be the same, so you may consider that.
Before I anyone thinks I have not tried that, I haven't, I just remember reading that, and seeing the shots, I was more than impressed. :D

Randy

The Kenko I use is an old extender not made anymore. C-AF 1.5X Teleplus MC is what is written on it. It doesn't report that it's attached to the camera/lens and yes, it works fine stacked with a Canon 1.4 for static subjects. It works well in a pinch but I can see some detail loss.

Side note....this has nothing to do with the OP's question so no need to point out that fact. :p

Post #51, Nov 28, 2012 18:08:06


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jhayesvw
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Elfstop wrote in post #15298971external link
Then what I said does not apply to you..how did you git that it was?

recrisp wrote in post #15299026external link

The reason he (Jeremy) probably thought you meant him is, you didn't quote who you were referring to, his reply was immediately above your post. Had you quoted who you were referring to, there would have not been any question.

Randy

exactly. it appeared you were talking to me because I replied last.

Post #52, Nov 28, 2012 23:47:54 as a reply to Duane N's post 5 hours earlier.


Jeremy
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mileslong24
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I've stayed out of these arguments since there is obviously no changing some people's minds. I've seen numerous pics posted with the combos, which is what someone kept asking for, yet it doesn't matter. I'll just keep snappin away and laughing. But my T3i along with the 400 5.6 and Kenko Pro 300 has been awesome and I don't see any better options for slightly over 2k.

Post #53, Dec 01, 2012 07:22:05 as a reply to jhayesvw's post 2 days earlier.




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danwanfur
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Thank you so much for all the comments. Since my last post I have had a chance to use the 5D Mark III + 100-400mm + Kenko 1.4x combination quite a bit. I was initially hoping to shoot raptors but haven't found the time so I have instead been practicing on shore birds. In general the combination works very well and I plan to continue using it for birding when I am focal length limited.

You can, for example, see a sequence of 6 consecutive frames (all sharp and in-focus) shot with the combination at 560mm f/8 here:
http://ffazalphotograp​hy.com ...01299/h4dc9153e#h4d​c9153eexternal link

IMAGE: http://ffazalphotography.com/img/s2/v73/p1305023806-5.jpg
[IMAGE'S LINK: http://ffazalphotograp​hy.com/p418201299/e4dc​9153e]external link

Here is a closer view of frame 4 in the sequence:
http://ffazalphotograp​hy.com ...01839/h4dc8d7ac#h4d​c8d7acexternal link
IMAGE: http://ffazalphotography.com/img/s2/v71/p1305008044-4.jpg
[IMAGE'S LINK: http://ffazalphotograp​hy.com/p183801839/e4dc​8d7ac]external link

Pros of using extender:
1) Images are still sharp and I get greater detail than without the extender.
2) All 41 cross-type AF points work!
3) Tracking sensitivity is as good as bare lens.
4) The subject fills up more of the viewfinder and covers a larger number of cross-type AF points on the 5D3 for focusing and tracking. This is actually a huge benefit that I didn't appreciate until I started using the combination out in the field.

Cons:
1) Initial focus acquisition seems a tad slower than the bare lens.
2) Noticeable purple fringing at the corners. While easy to correct in LR4, it is still annoying.
3) Slight decrease in contrast.
4) Biggest issue is the most obvious one - now the combination is an f/8.0 lens, which really doesn't let much light in and won't blur the background as much as with a faster lens. This is the main reason I hope to upgrade to a faster lens when funds permit, but for now I'm happy with the combination.

Post #54, Dec 02, 2012 13:50:10 as a reply to mileslong24's post 1 day earlier.


5D Mark III; Sony A7r; Samyang 14mm f/2.8; EF 16-35mm f/2.8L II; EF 24-70mm f/4.0L IS; EF 70-300mm f/4.0-5.6L IS; EF 85mm f/1.8; EF 500mm f/4L IS I
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5D Mark III + 100-400L + Kenko 1.4X DGX Autofocus?
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