Binny
Posts: 13
Location: Toronto, Canada
Registered: 17 Nov 2011
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sigma 8mm canon Mount + NEX 5 + ????? ADAPTOR ???
Posted: 18 Nov 2011 at 5:23 GMT
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Hello,
Is there anyone out there know what kind of Adapter should I be looking for to make this rick work.
sigma 8mm canon Mount + NEX 5
I did a bit of reading and I think it should be EF-S adapter eos to nex ???
can someone point me to the right direction please ?
thanks
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hindenhaag
Posts: 729
Location: Netherlands
Registered: 7 Mar 2010
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Smooth
Posts: 3774
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Nick Fan
[NodalNinja]
Posts: 710
Location: Hong Kong
Registered: 26 May 2006
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Re: sigma 8mm canon Mount + NEX 5 + ????? ADAPTOR ???
Posted: 18 Nov 2011 at 10:03 GMT
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Smooth said: You require an EOS to NEX adapter with Aperture Control.
tinyurl.com/Canon-NEX-Aperture-Control
Without it you will be stuck with a wide open lens.
Regards, Smooth 
www.omnipix.com.au
Any one tried that adapter. Does it really work? The aperture is normally inside the lens. Putting a diaphragm after the lens may just cause vignetting.
Nick
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Smooth
Posts: 3774
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Re: sigma 8mm canon Mount + NEX 5 + ????? ADAPTOR ???
Posted: 18 Nov 2011 at 10:56 GMT
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Nick Fan said: Any one tried that adapter. Does it really work? The aperture is normally inside the lens. Putting a diaphragm after the lens may just cause vignetting.
Nick
Hi Nick,
I have the adapter and yes it can cause vignetting if you attempt to close it too far. f/5.6 - f/8 is fine and that is about right range for a Sigma 8mm.
Regards, Smooth
www.omnipix.com.au
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Nick Fan
[NodalNinja]
Posts: 710
Location: Hong Kong
Registered: 26 May 2006
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Re: sigma 8mm canon Mount + NEX 5 + ????? ADAPTOR ???
Posted: 18 Nov 2011 at 14:49 GMT
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Hi Nick,
I have the adapter and yes it can cause vignetting if you attempt to close it too far. f/5.6 - f/8 is fine and that is about right range for a Sigma 8mm.
Regards, Smooth
www.omnipix.com.au
HI Smooth,
Thx for the info. Does it have optical element after the diaphragm? How do you know the F-number? Is that the effective one?
Nick
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Smooth
Posts: 3774
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Re: sigma 8mm canon Mount + NEX 5 + ????? ADAPTOR ???
Posted: 18 Nov 2011 at 15:12 GMT
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Nick Fan said: HI Smooth,
Thx for the info. Does it have optical element after the diaphragm? How do you know the F-number? Is that the effective one?
Nick
Nick, there is a few versions available this one has the aperture scale on it. tinyurl.com/with-f-stops How accurate it is I haven't really tested. There is no optic. You can make a decision on the aperture by knowing what the lightmeter reads with the same shutter speed from a known source like your Canon camera with the Sigma 8 fitted with the same ISO etc. Or you can visually sight the aperture hole of a known f/stop on a manual lens.
Regards, Smooth
www.omnipix.com.au
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DennisS
Posts: 1292
Location: Los Anglels, United States
Registered: 1 Sep 2007
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Re: sigma 8mm canon Mount + NEX 5 + ????? ADAPTOR ???
Posted: 18 Nov 2011 at 15:19 GMT
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I had to visually sight the aperture when I pinned my Nikon/NEX adapter for my Sigma lens. More art than science.
I am so glad I pinned the aperture ring. I cannot tell you how many times I bumped the ring and changed the f stop without realizing. Lost quite a few panoramas due to that mistake.
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Binny
Posts: 13
Location: Toronto, Canada
Registered: 17 Nov 2011
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Re: sigma 8mm canon Mount + NEX 5 + ????? ADAPTOR ???
Posted: 18 Nov 2011 at 17:44 GMT
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Gentlemen,
Thank you for the info. I am looking variety of them on amozon as well on ebay. I m living in Canada and I am not sure how shipping would work.
Also as you mention the pin location on the adapter aperature. is that something I have to take risk of buying it and play around until I found the sweet spot ?
Thank you
Binny 
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Smooth
Posts: 3774
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Re: sigma 8mm canon Mount + NEX 5 + ????? ADAPTOR ???
Posted: 18 Nov 2011 at 18:05 GMT
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Binny said: I m living in Canada and I am not sure how shipping would work.
It would be sent to you via post. I buy from all over the world weekly. Allow around 21 days delivery from Hong Kong (or upgrade the delivery to express where it takes 3-5 days).
Binny said: Also as you mention the pin location on the adapter aperature. is that something I have to take risk of buying it and play around until I found the sweet spot ?
The Fotodiox Nikon adapter and the Canon adapter are very, very different. I own and use both. The aperture control on the Canon versions I have linked to are not likely to move. The fiction aperture ring is quite good. If you were to find the sweet spot you could simply tape it as you would the focus ring also.
Regards, Smooth
www.omnipix.com.au
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Binny
Posts: 13
Location: Toronto, Canada
Registered: 17 Nov 2011
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Re: sigma 8mm canon Mount + NEX 5 + ????? ADAPTOR ???
Posted: 19 Nov 2011 at 3:07 GMT
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Hi Smooth,
tinyurl.com/Canon-NEX-Aperture-Control
I just want to make sure this is rhe right one i should get.
thanks
Binh
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Smooth
Posts: 3774
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Re: sigma 8mm canon Mount + NEX 5 + ????? ADAPTOR ???
Posted: 19 Nov 2011 at 12:39 GMT
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Binny said: Hi Smooth,
tinyurl.com/Canon-NEX-Aperture-Control
I just want to make sure this is rhe right one i should get.
thanks
Binh
Personally I would go with this one tinyurl.com/with-f-stops it's half the price, has f/stop markings and on top of that it's black matching the lens.
But either will do the job fine. I can say this with confidence because I have both. In fact I need to sell the KIPPON version.
Regards, Smooth
www.omnipix.com.au
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Binny
Posts: 13
Location: Toronto, Canada
Registered: 17 Nov 2011
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Re: sigma 8mm canon Mount + NEX 5 + ????? ADAPTOR ???
Posted: 25 Nov 2011 at 4:34 GMT
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Hi Smooth,
i am wqiting for the adapter. i will post result once i have received it and put them together.
Binny
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michael przewrocki
Posts: 939
Location: basel, Switzerland
Registered: 19 Nov 2004
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Re: sigma 8mm canon Mount + NEX 5 + ????? ADAPTOR ???
Posted: 26 Nov 2011 at 3:11 GMT
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Maybe this one is the best of all of them:
www.ebay.com/itm/Canon-EOS-lens-Sony-E-NEX-3-NEX5...
our adapter: max. aperture diameter of 37mm / (much larger than similar adapters)
1) due to the limitation of this type of aperture (not inserted between the front and rear lens elements, but placed behind the rear lens elements), you can not fully stop-down the aperture with this adapter... you can only stop-down up to halfway, otherwise, there will be vignetting issue..
2) although it fits all EOS (EF, EF-S) lenses... this adapter is mostly suited for telephoto EOS lenses with large aperture diameter.
I wil not buy it, i do not have EOS-lenses yet.
Will get my first EOS soon: EOS 5! Will adapt my Zeiss(C/y)-lenses.
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Binny
Posts: 13
Location: Toronto, Canada
Registered: 17 Nov 2011
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Re: sigma 8mm canon Mount + NEX 5 + ????? ADAPTOR ???
Posted: 2 Dec 2011 at 3:09 GMT
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Hello everyone...
I am checking in with the new EOS to NEX from photodiox with aperture control.
went out today on a beautiful day and did some test shot..
the result was disastrous. everyhting were blurry and out of focus...
Until i reallize that I now have to refocus so my sweet spot on the 8mm was between .5 to 1 and now it is at .2 and .3 ...
could someone let me know where I go wrong with this thing ?
Thank you
Binny
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