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Pau
Joined: 20 Jan 2010
Posts: 1310
Location: Valencia, Spain
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 Posted: Fri Apr 27, 2012 3:27 am Post subject: |
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| conkar wrote: |
As a user of Canon equipment I always had the ef-12 connected to the DSLR body when I'm connect the camera to my nikon bellows.... |
I have a Rokunar (= Kenko) 25mm extension tube with contacts to transmit the info between the EF lens and EOS camera. It works nicely with a Canon EF objective, but if I mount it on the camera without an EF lens (for exemple with a M42 to EF unchipped adapter) the camera shows an error message and locks. This occurs if the camera senses the tube but not the lens, and doesn't happen if I use the adapter without the extension tube.
Are you experimenting a similar issue with Canon tubes?. Do you use chipped Nikon to EF adapters with it?
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Pau |
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Craig Gerard
Joined: 01 May 2010
Posts: 2594
Location: Australia
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| Posted: Fri Apr 27, 2012 4:23 am Post subject: |
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Pau,
No, I'm not receiving any error messages or lock ups.
Yes, I used chipped Nikon to EOS adapters (high quality), maybe I need to use higher quality adapters; but would be curious to know more about the EF-12.
Craig
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crisarg
Joined: 23 Jan 2011
Posts: 274
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| Posted: Sat Apr 28, 2012 11:57 am Post subject: |
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I'm also very interested to know more about the extension tubes. I'm using a Fotodiox Canon - Nikon adapter (the version without chip - very happy with it) without an extension tube on my PB-6 bellows. I didn't encounter any problems until now but I mounted a Nikon PK-12 tube on the bellows after reading this thread.
Is it PK-11A really neccessary or my PK-12 is enough? What's the difference between them?
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Cristian Arghius
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conkar
Joined: 18 Dec 2010
Posts: 188
Location: Sweden
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| Posted: Sun Apr 29, 2012 2:14 am Post subject: |
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| Craig Gerard wrote: |
What advantages do you see the EF-12 providing when attaching Nikon gear to a Canon EOS (apart from those already mentioned)?
Craig |
Some of the reasons for me to buy the Canon EF-12 and EF-25 was:
- They were on sale at a Swedish Camera store to a good price.
- I wanted to be sure that the electrioncs worked proper between the DSLR and the EF lenses and they do that very good. I also tested them with the MP-E 65 and I can change aparture and so on.
- I also wanted the extension tubes close to the DSLR to have a good fit to avoid slack/jiggle in the lensmount.
The Canon EF-12 and EF-25 work great with my EF-lenses and both the 7D and 5DmkII.
I don't have so much Nikon gear at the moment to use with the EF-12/EF 25. The Nikon gear I use them with are my Nikon bellows.
As I wrote before I use the EF-12 to get some distance to the bellows mount and also as a precaution to not risk of harming the electronic connectors at the lensmount of the DSLR body.
| Pau wrote: |
I have a Rokunar (= Kenko) 25mm extension tube with contacts to transmit the info between the EF lens and EOS camera. It works nicely with a Canon EF objective, but if I mount it on the camera without an EF lens (for exemple with a M42 to EF unchipped adapter) the camera shows an error message and locks. This occurs if the camera senses the tube but not the lens, and doesn't happen if I use the adapter without the extension tube.
Are you experimenting a similar issue with Canon tubes?. Do you use chipped Nikon to EF adapters with it? |
I have not experienced that problem you mention here, I use a non chipped Nikon to EF adapter.
For M42 to EF I normally use a chipped adapter, but I have some non chipped I can make a test with.
I would love to have the Novoflex EOS/NIK adapter but it's out of my price range for the moment, when I have other more important things to buy to my setups.
| crisarg wrote: | I'm also very interested to know more about the extension tubes. I'm using a Fotodiox Canon - Nikon adapter (the version without chip - very happy with it) without an extension tube on my PB-6 bellows. I didn't encounter any problems until now but I mounted a Nikon PK-12 tube on the bellows after reading this thread.
Is it PK-11A really neccessary or my PK-12 is enough? What's the difference between them? |
I think you PK-12 is good.
The current Nikon series of extension tubes consist of a set of three: an 8mm PK-11a, a 12.5mm PK-12 and a 27.5mm PK-13* extension tube, plus the PN-11* extension tube. As with the lens reversal adaptor, the PK-11 extension tube is meant for manual bodies while the PK-11a extension tube must be used for all AF bodies with electrical/electronic contacts in the lens mounts.
*Note: The PK-13 is the standard extension tube for the manual focus 55mm AI-S Micro-Nikkor and the PN-11 is the standard extension tube for the manual focus 105mm AI-S Micro-Nikkor to achieve their full 1:1 life-size capability. On their own, the 55mm and 105mm Micro-Nikkors will only reach a maximum of 1:2, half life-size magnification.
http://www.nikonians.org/html/resources/nikon_articles/other/close-up_macro/macro_6.html
Regards,
Conny |
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crisarg
Joined: 23 Jan 2011
Posts: 274
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| Posted: Sat Dec 15, 2012 6:25 am Post subject: |
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Craig, could you help with the total height of the PB-5 plus A-S rail? I'm asking it because I'm curious if it'll fit in my Lowepro Flipside 400 bag as a future purchase. My Nikon PB-6 fits tight in vertical position without the rail and I measured its height at 135 mm.
Thanks a lot.
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Cristian Arghius
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Craig Gerard
Joined: 01 May 2010
Posts: 2594
Location: Australia
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| Posted: Sat Dec 15, 2012 3:29 pm Post subject: |
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Cristian,
I've since sold the PB-5, but the sale was not due to any shortcomings of the unit.
Total height including AS rail is 135mm. The AS rail in the images is 8" (202mm in length).
Craig
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crisarg
Joined: 23 Jan 2011
Posts: 274
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| Posted: Sun Dec 16, 2012 2:56 am Post subject: |
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Thanks! Looks very good for a future purchase then! 
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Cristian Arghius
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