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Pontus
Joined: 18 Dec 2011
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Location: Jakobstad, Finland
Expire: 2016-08-25
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 Posted: Mon Apr 23, 2012 12:38 pm Post subject: Extension tubes for Olympus OM and NEX (auto or non-auto) |
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Pontus wrote:
I'm about to buy original extension tubes for my Olympus Zuiko OM 90/2 Macro. I will use the lens on my Sony NEX-5N.
Are there any reasons at all to buy the auto extension tubes or will the older non-auto version do just fine (or even better)? The non-auto version I found is slightly cheaper.
There is a small lever on the OM mount which activates the aperture mechanism. Will the non-auto extension tubes lock this lever into place so that the aperture ring is functional?
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Pontus
Joined: 18 Dec 2011
Posts: 1471
Location: Jakobstad, Finland
Expire: 2016-08-25
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| Posted: Wed Apr 25, 2012 8:05 am Post subject: |
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Pontus wrote:
Does anyone have any thoughts on this? I have to make up my mind today. Thanks!
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Pontus
Joined: 18 Dec 2011
Posts: 1471
Location: Jakobstad, Finland
Expire: 2016-08-25
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| Posted: Thu Apr 26, 2012 12:28 pm Post subject: |
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Pontus wrote:
I ordered the auto version for 25 euro more. Let's see how it works out.
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heritagecameras
Joined: 19 Feb 2011
Posts: 104
Location: UK
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| Posted: Fri Apr 27, 2012 7:53 am Post subject: |
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heritagecameras wrote:
Yes, either type of Olympus extension tube should be fine for this application, as long as your OM-NEX adapter correctly activates the lens's auto diaphragm lever.
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Dave, HCL |
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Pontus
Joined: 18 Dec 2011
Posts: 1471
Location: Jakobstad, Finland
Expire: 2016-08-25
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| Posted: Fri Apr 27, 2012 8:38 am Post subject: |
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Pontus wrote:
Will the older "non auto" extension tubes activate the auto diaphragm lever? In that case it wouldn't even matter if the adapter works correctly or not. And the older and cheaper tubes would in fact be a better choice.
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heritagecameras
Joined: 19 Feb 2011
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Location: UK
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| Posted: Fri Apr 27, 2012 10:16 am Post subject: |
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heritagecameras wrote:
Yes, that's correct. The Olympus manual tubes do activate the lens's auto diaphragm lever, allowing all apertures to be used even if the OM-NEX adapter doesn't. This may not be true of all independent tubes, however.
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Pontus
Joined: 18 Dec 2011
Posts: 1471
Location: Jakobstad, Finland
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| Posted: Fri Apr 27, 2012 10:19 am Post subject: |
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Pontus wrote:
Thank you so much!
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