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03-01-2017, 01:59 PM   #1
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Extension tubes mount id help needed

I got this af extensión tubes , i thought it Was pentax k mount but I made a mistake
Do you know this mount ? lens and DSLR to match the tubes ?
Thanks in advance and sorry bad english.
Best regards from Spain
IMG_0593.JPG | paco | Flickr

Last edited by pasorro; 03-01-2017 at 02:04 PM.
03-01-2017, 02:22 PM   #2
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That's definitely not a Pentax mount. I'm thinking Minolta or Sony A, because it doesn't look like Canon or Nikon, either.

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03-01-2017, 02:25 PM   #3
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Thanks. The case is marked as Sigma. But I am not sure if it could be the original case.
03-01-2017, 02:27 PM   #4
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I would guess Minolta A (AF) mount. It is my understanding that your tubes will work with Sony A mount cameras/lenses.


03-01-2017, 02:31 PM   #5
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5 pins - Minolta AF mount, 8 pins Sony alpha mount, both will work with your tubes.
03-01-2017, 02:59 PM   #6
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What about Sigma e mount? Could it be this?
03-01-2017, 03:02 PM   #7
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QuoteOriginally posted by pasorro Quote
What about Sigma e mount? Could it be this?
Not Sigma SA. SA, like EF, has electromagnetic aperture. Minolta/Sony A mount has mechanical aperture...E mount is Sony mirrorless, it doesn't have mechanical aperture either...or screw drive...
03-01-2017, 03:23 PM   #8
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Ok Thanks a lot to everybody

03-01-2017, 04:40 PM   #9
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Yes, definitely Sony A-mount

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