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Archive 2013 · Canon 70-300 L w Kenko 1.4 updated w ISO800
  
 
unclechuck
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p.1 #1 · p.1 #1 · Canon 70-300 L w Kenko 1.4 updated w ISO800


1/9

Third day of gray Florida overcast --- added third image @ IS0800. Once again this is center focus @290mm. This one has been tweaked to bring up the light.

I hope this post helps someone --- very frustrating to search Kenko and find so much talk and so few images ... and then by luck find the insight to shoot at 290 to keep center focus.

...... 1/7

After a ton of research I bought a Kenko 1.4 DGX. The key concern was IQ which logically turned on the center focus. Most folks said IQ was good but at 300 the center point AF would hunt or not work at all. Many said other focal points worked well --- adding that manual worked fine for them.

Interestingly two posts said the center point worked if they backed down to 290 --- so I figured it was worth a try.

The Kenko arrived on an overcast Florida day, but the light was still fairly good and of course I had to try.

Even in marginal light the Center AF works well at 290mm on my T2i

These are ISO200 JPG straight from the camera; cropped to 100%, No tweaks. I haven't worked the RAW yet.

Given the light I'm very pleased with the results --- but for the benefit of those considering the Kenko 1.4 DGX on a 70-300L I'm posting these so you can decide for yourself.






Edited on Jan 09, 2013 at 04:57 PM · View previous versions



Jan 07, 2013 at 08:38 PM
unclechuck
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p.1 #2 · p.1 #2 · Canon 70-300 L w Kenko 1.4 updated w ISO800


.






Edited on Jan 07, 2013 at 08:48 PM · View previous versions



Jan 07, 2013 at 08:44 PM
3iron
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p.1 #3 · p.1 #3 · Canon 70-300 L w Kenko 1.4 updated w ISO800


Dang, that is much better than I would have guessed. Well done and thanks for sharing.


Jan 07, 2013 at 08:47 PM
unclechuck
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p.1 #4 · p.1 #4 · Canon 70-300 L w Kenko 1.4 updated w ISO800


Added 1/9 about 100' Canon T2i







Jan 09, 2013 at 04:39 PM
 

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Imagemaster
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p.1 #5 · p.1 #5 · Canon 70-300 L w Kenko 1.4 updated w ISO800


All with 70-300 L and Kenko 1.4x on a Canon 1DMk4. No problem with focusing at 300mm.






#1

  Canon EOS-1D Mark IV    EF70-300mm f/4-5.6L IS USM lens    420mm    f/8.0    1/1600s    800 ISO    +1.0 EV  







#2

  Canon EOS-1D Mark IV    EF70-300mm f/4-5.6L IS USM lens    420mm    f/8.0    1/320s    1600 ISO    -0.3 EV  







#3

  Canon EOS-1D Mark IV    EF70-300mm f/4-5.6L IS USM lens    420mm    f/11.0    1/3200s    1600 ISO    -0.7 EV  







#4

  Canon EOS-1D Mark IV    EF70-300mm f/4-5.6L IS USM lens    309mm    f/8.0    1/200s    1600 ISO    -0.7 EV  




Jan 09, 2013 at 04:48 PM
unclechuck
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p.1 #6 · p.1 #6 · Canon 70-300 L w Kenko 1.4 updated w ISO800


Imagemaster wrote

All with 70-300 L and Kenko 1.4x on a Canon 1DMk4. No problem with focusing at 300mm.


Thanks for great images! The 1D4 really shows off what the Kenko 1.4 can do in experienced hands.



Jan 09, 2013 at 04:56 PM
unclechuck
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p.1 #7 · p.1 #7 · Canon 70-300 L w Kenko 1.4 updated w ISO800


Imagemaster's gorgeous shots left my Cardinal feeling under-dressed, so here's a quick tweak.







Jan 09, 2013 at 05:40 PM





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