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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 17 Feb 2011 (Thursday) 09:49
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70-200 F2.8 MKII + Kenko 2X MC4 DGX Sample Tests

 
Silverfox1
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Feb 17, 2011 09:49 |  #1

Tested this combo under a solid overcast gloomy day. Tired of waiting for the SUN ! :lol:

Tripod mounted, Delay Timer, AF at F5.6 without the extender and of course AF with the 2X extender at F5.6, F8.0, F11.0

Simply moved the tripod back to frame the test subject close to the 1st capture without the TC at F5.6

None of the below captures have been cropped and no major PP performed other then adjusting the exposure in DPP a small amount due to the fact that when using a 2X extender under certain ambient lighting conditions it will sometimes either over-expose or even under-expose your shots.

Also did 100% crops and they are below in another post.

AF was very responsive with the 2X and i also performed these tests with Live View, X10, delay timer, manual focus, & even at MFD and the results were very good, but decided to post the below since AF performed flawless and thats what most folks want when purchasing an extender.

The minimal AF speed reduction could possibly be the result of the less light fall-off % due to just the 4 element internal design of the MC4 versus the 7 elements in the MC7`s. Who Knows ? :rolleyes:

On my 24" monitor F8.0 appears to be the target to use with a crop body sensor.

Included below are also some random captures taken handheld with estimated distances to subject included.

200mm F5.6, ISO200, ss 1/500

IMAGE: http://img.photobucket.com/albums/v679/Silverfox111/IMG_1918.jpg

400mm F5.6, ISO200, ss 1/500

IMAGE: http://img.photobucket.com/albums/v679/Silverfox111/IMG_1921.jpg

400mm F8.0, ISO200, ss 1/250

IMAGE: http://img.photobucket.com/albums/v679/Silverfox111/IMG_1927.jpg

400mm F11.0, ISO200, ss 1/125

IMAGE: http://img.photobucket.com/albums/v679/Silverfox111/IMG_1928.jpg


---------------

[SIZE=2][SIZE=3][SIZE=​2]I will post the 100% crops in another post below.

Regards, ;)


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Silverfox1
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Feb 17, 2011 09:57 |  #2

100 % Crops of the above:

200mm F5.6, ISO200, ss 1/500

IMAGE: http://img.photobucket.com/albums/v679/Silverfox111/IMG_1918crop.jpg

400mm F5.6, ISO200, ss1/500

IMAGE: http://img.photobucket.com/albums/v679/Silverfox111/IMG_1921crop.jpg

400mm F8.0, ISO200, ss 1/250

IMAGE: http://img.photobucket.com/albums/v679/Silverfox111/IMG_1927crop.jpg

400mm F11.0. ISO200, ss 1/125

IMAGE: http://img.photobucket.com/albums/v679/Silverfox111/IMG_1928crop.jpg

---------------

[SIZE=2]I will post the random Handheld captures in another post below.

Regards, ;)

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Silverfox1
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Feb 17, 2011 10:15 as a reply to  @ Silverfox1's post |  #3

Random HandHeld Captures:

400mm F5.6, ISO200, ss 1/160, Estimated Distance 50FT.

IMAGE: http://img.photobucket.com/albums/v679/Silverfox111/IMG_1943.jpg

400mm, F11.0, ISO400, ss 1/100, Estimated Distance 50FT.

IMAGE: http://img.photobucket.com/albums/v679/Silverfox111/IMG_1940.jpg

400mm, F5.6, ISO400, ss 1/250, Estimated Distance 150FT.

IMAGE: http://img.photobucket.com/albums/v679/Silverfox111/IMG_1947.jpg

100% Crop of the above Truck

400mm, F5.6, ISO400, ss 1/250, Estimated Distance 150 FT.

IMAGE: http://img.photobucket.com/albums/v679/Silverfox111/IMG_1947crop.jpg

---------------

That concludes the testing i performed and IMHO the Kenko 2X MC4 DGX is a bang for your buck extender with the added bonus of being compatible with a variety of 3rd Party EF lenses.

I will soon be testing the 2X Vivitar MC7 NON-reporting extender with both the 70-200 MKII & 100-400L to make a comparison with this Kenko used here.

[SIZE=2]Regards, ;)

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djre4orm
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Feb 17, 2011 10:42 |  #4

Thanks for the PM. Nice results! 5.6 is a little soft at 100%, probably still usable. Although the 8 & 11 look very close to without the converter.

So for daylight sporting events, this might be my goto combo




  
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Silverfox1
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Feb 17, 2011 10:49 as a reply to  @ djre4orm's post |  #5

Will be mine also unless the 2X Vivitar MC7 NON-reporting i am going to test equals this one in IQ and allows AF to function with the 100-400L in good outdoor lighting conditions at F11.0

Be testing the Vivitar soon.

Regards, ;)


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BucketMan
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Feb 17, 2011 11:08 as a reply to  @ Silverfox1's post |  #6

Yes, thanks for the heads up via PM!

Good results. Looks like F8 is def. the sweet spot for that combo. Considering the cost of the TC I am pleased with the results.

May very well find its way into my bag in the very near future.


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beaugolfs
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Feb 17, 2011 11:33 |  #7

Well Done and thanks for taking the time to do this!!! I don't think I will be spending $500+ on the Canon TC 2x III anytime soon. :)


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themadman
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Feb 17, 2011 11:34 |  #8

Looks about right to me, I have been using F8 with my 2x Pro300 + 70-200 f2.8 IS II combo and the results seem similar.


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thrash_273
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Feb 17, 2011 11:35 |  #9

looks really sharp


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mansalim
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Feb 17, 2011 11:39 |  #10

Sharp enough for me.


:)

  
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Tanglefoot47
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Feb 17, 2011 11:47 |  #11

looks darn good at a fraction of the cost




  
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gasrocks
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Feb 17, 2011 11:48 |  #12

If you start with a high IQ lens you can lose a little using a TC, even a cheaper 2x TC.


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pocanontn
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Feb 17, 2011 15:55 |  #13

Thanks for doing these. I have not got round to trying my Kenko 2x mc4 dgx out yet in the real world. I hope to do a bit more testing at the weekend.
Your results look very encouraging.
With the very limited testing I have done, I certainly noticed perhaps one stop of overexposure on my 7D.


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Silverfox1
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Feb 17, 2011 19:29 |  #14

pocanontn wrote in post #11863084 (external link)
Thanks for doing these. I have not got round to trying my Kenko 2x mc4 dgx out yet in the real world. I hope to do a bit more testing at the weekend.
Your results look very encouraging.
With the very limited testing I have done, I certainly noticed perhaps one stop of overexposure on my 7D.

Thanks & Be sure & post your results for those interested. When using the 2X extender its always best to shoot in RAW due to the exposure varying under different ambient lighting conditions. Its not always the same.

Regards, ;)


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c2thew
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Feb 17, 2011 19:36 |  #15

awesome test.


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70-200 F2.8 MKII + Kenko 2X MC4 DGX Sample Tests
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