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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 16 Aug 2013 (Friday) 00:45
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Error using non-Canon, AF Chipped manual lens with EF to EFM adaptor?

 
LoneRider
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Aug 16, 2013 00:45 |  #1

So I got my EOS-M last week and finally received my Meike EF to EF-M adapter. The adapter works fine with my Canon EF lenses, but when I attach my Rokinon 85mm chipped lens on I get a "Firmware upgrade failed" error.

The Roki works fine on my 6D, indicates focus and no error. I also have a M42-EF adapter that is chipped, and it works fine on my 6D, but gives the same error on the EF to EF-M adapter.

Is anyone using chipped manual lenses with the Canon brand EF to EF-M adapter successfully? Is it a chip to EOS-M issue or is it an adapter issue? My understanding is the electrical connection in the adapter are just pass thru, no circuit involved.

Not a big deal, I can just tape off the contacts when using the EOS-M. Just wondering if anyone else is experiencing the same or if there is someting to be had for going with the Canon adapter.


Wayne...
~I don't suffer from gear ADD, I embrace and enjoy it...~
Canon EOS R, Panasonic G9, GX9, and a bunch of glass...

  
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clacson
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Location: Southern Finland
     
Aug 16, 2013 06:45 |  #2

I have a EOS M, Canon EF-EOS M-adapter and a 4G AF-Confirm chipped Helios-44M f/2 58mm. Tested the combination and all worked as expected using the manual exposure.

Your problem might be the chip or the adapter, in my opinion not the EOS M.

I had a problem to choose Canon or 3rd party adapter, I went to the more expensive way and bought the genuine.
I found mine from here: http://stores.ebay.co.​uk …op?_trksid=p204​7675.l2563 (external link) and from the UK Stock.


| Canon EOS 6D | EF 24-105mm f/4L IS USM, EF 40mm f/2.8 STM, Sigma 12-24 f/4.5-5.6 DG II HSM |
| Canon EOS M | EF-M 11-55mm f/3.5-5.6 IS STM, EF-M 55-200mm f/4.5-5.6 IS STM, EOS EF-M adapter |
| Film Age: Canon EOS 33v, Canon EOS 5 |

  
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GTogs
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Location: NW Iowa
     
Oct 15, 2013 21:56 |  #3

I have an EOS M and have had the problem with chipped adapters on the EOS to M adapter. This happed on adapters that worked fine on a 60D. The were for the M42 and PK mounts.


Togs
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Error using non-Canon, AF Chipped manual lens with EF to EFM adaptor?
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
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