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70-200 With Extender

Started by WFD , Jun 05 2016 06:27 AM

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#1 WFD

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Posted 05 June 2016 - 06:27 AM

Asking where I know there are lots of skills and knowledge. 

I was thinking about getting a 2x (ii or iii) extender to use with my 5D ii and or 7D and 70-200 2.8 IS.

 

Is that a bad idea? Will I lose to much quality compared to a 100-400?


#2 David Pavlich

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Posted 05 June 2016 - 09:46 AM

The 2X doesn't get a lot of praise, but the 1.4 does well (these are Version III).  I have the 1.4 and saw some video work my son did using it with the 70-200 f2.8ll on a Canon C100 video camera.  The video was terrific!

 

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#3 cuda

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Posted 06 June 2016 - 09:19 AM

The only problem with the Canon 2x converter you will have trouble with af with your camera bodies. You will have better luck with the 1.4 version III that Dave was referencing. Good luck

#4 WFD

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Posted 06 June 2016 - 10:40 AM

Thank you for your comments. I stay away from those converters and wait until I can afford another lens that will cover up my needs.


#5 PeterPP

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Posted 06 June 2016 - 02:19 PM

A f/2.8 lens becomes a f/5.6 lens with a 2x converter (if it fits) attached,  so the combination will work fine on most all bodies.

The 100-400 is a f/4.5-5.6 lens itself, so same/same as far as aperture is concerned.

 

But I have never been happy with the resulting image quality using a 2x converter, I can usually see noticeable degradation.

As mentioned the 1.4x on the other hand is terrific.


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Locked out of forums and can't get back in.Siobhan sent me email that they are no longer doing anything with the forums site and to use the FB group instead.

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#6 JestePhotography

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Posted 06 June 2016 - 09:48 PM

TC really are not meant for zooms. They "work" but if you are hell bent on using them get a 300mm prime(or 400,500,600mm...)

#7 RAH1861

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Posted 07 June 2016 - 06:13 AM

I have seldom seen a review of a 2x TC that is good. I think you can essentially generalize that you are insane to use a 2x TC (I exaggerate, but only a little). I recently got a Canon 1.4 TC (a version II), hoping it would give good results with my Canon 400mm 5.6 and new 80D. So far I like what I am seeing, which is a little surprising to me. I should think that it might work pretty well with your 70-200. I got my 1.4 second-hand on the KEH used equipment website at a really good price. I recommend checking it out.


Rich

#8 JestePhotography

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Posted 07 June 2016 - 10:48 PM

Well I don't know about canon's TC's but I shoot a LOT with my 2X on my 400 f2.8E. That being said it works well but the 400mm f2.8E is in a rarified class of its own. It loves TC's.

#9 Chimpy

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Posted 08 June 2016 - 05:37 AM

Having owned the Canon 2x TC, the 1.4 TC and the Kenko 1.4 TC and used them on a 70-200 L and other lenses I can say the Canon 1.4 TC is the best option, as the 2x looses quite a lot in image quality.

 

The loss in quality compared to using the 100-400 mm IS L MK II is huge, so much so I sold all my TC's.

 

Chimpy


#10 RAH1861

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Posted 08 June 2016 - 06:10 AM

I also used a Kenko 1.4 TC (a Pro DGX model) - I used it with my 400 5.6L and my older 60D. The Kenko is special in that it fools the camera into thinking it has max aperture > f8, to preserve AF on a 60D; this is no longer necessary on the 80D, which allows center-point AF even at f8. The Kenko focuses pretty well, but the IQ loss was more than I liked and I stopped using it. So far I like what I am getting from the Canon 1.4II and the 400 5.6.


Rich

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