Rumors > Third Party Manufacturers
5Dmk3 doesnt play with kenko teleconverters
drjlo:
To my dismay, my trusty Kenko 1.4x Teleplus Pro 300 teleconverter is not working with Canon 5D MkIII. It used to work perfectly with every Canon lens (not just the ones compatible with Canon teleconverter) on 550D.
The only lens that seems to still work with Kenko is Canon 70-200 MkII, which is a relief since that's the one that needs to work. But even the Canon 135 f/2, which is listed under compatible lens for Canon teleconverter, does not work with Kenko. Any other lens simply locks up the 5D MkIII after one shot (image is not recorded), which requires a battery reinsert to unfreeze the camera. What a bummer!
On the other hand, Pro Optic extension tubes from Adorama still work with 5D III.
FlowerPhotog:
I have been able to successfully use my Kenko 1.4X Teleplus Pro 300 converter with my 5D Mark III. I have had no problems at all using it with my 70-300 L, which by the way does autofocus when the Kenko is attached, even when it is at 300 mm, which theoretically it shouldn't as the max aperture is f5.6 at that point, so with the 1.4X, I'm at f8.0. Data is reported in EXIF file correctly as the 70-300 lens and it shows 420 mm as the focal length. I also have tried the Kenko with my Sigma 150 Macro and the 24-105 kit lens that came with the 5D Mark III, and both also seem to work fine. I just bought the Kenko from Adorama about 6 weeks or so ago, so maybe they changed something in it that is allowing a newer version to work? The Kenko also works fine on my T2i, also allowing autofocus on my 70-300 when its at 300.
I've attached a shot taken tonight with the 70-300L @ 300mm with the Kenko 1.4X. This was handheld at f8.0, 1/500 sec. ISO set to 3200. One of the main reasons I wanted to get the Mark III vs my old T2i was the ability to use the higher ISO, both for faster shutter speeds to help in windy conditions and/or low light like this picture which was taken in total shade. These are jpgs out of LR4.1, absolutely no noise reduction added, so you can see how little noise there is at 3200 ISO. First one is the full frame, then cropped to just the tulip.
(I haven't posted pictures before, so hopefully these will show up. When I did the preview before submitting,I am not seeing the pictures, but it shows them to be attached.)
Stephen Melvin:
Tested my Sigma 1.4x EX TC with my 70-200 f/2.8L IS USM II and it works fine. For once, a Sigma didn't stop working.
drjlo:
--- Quote from: FlowerPhotog on April 10, 2012, 10:38:39 PM ---I have been able to successfully use my Kenko 1.4X Teleplus Pro 300 converter with my 5D Mark III. I have had no problems at all using it with my 70-300 L
--- End quote ---
Can you try some other Canon lenses and report back which ones do/don't work?
wickidwombat:
here is the last email from Kenko support (very quick to respond I might add)
I also note that using the sigma and kenko works perfectly on the 1Dmk3 and 5Dmk2 (although i dont use it as a regular combo i have just tested it out the 3 lenses i mainly use a TC on are the 100 macro, the 70-200 and the 300. but i have verified that the kenko TC works on every lens i've ever owned on every body except the 5Dmk3 I had.
"Dear Sir,
Thank you very much for your reply.
We have checked all lenses you mentioned with Canon 5D Mark 3 and Teleplus PRO300 DGX 1.4x Canon.
And we haven't any problems in these combinations.
Canon lens:
300 f4L IS
70-200 f2.8L IS II
100 f2.8L IS Macro
50mm f1.4
For 85mm Sigma f1.4, we didn't check with because Kenko Teleplus series support only Nikon, Canon, Sony, Pentax and Tokina lens.
If you use Kenko Teleplus with other lenses, it might cause camera body, Kenko Teleplus or lenses to malfunction.
Yours sincerely,
Kenko International Division"
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