Old Vivitar to Canon EOS adapter?

Discussion in 'Photography Beginners' Forum' started by rfosness88, Apr 7, 2009.

  1. rfosness88

    rfosness88 TPF Noob!

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    So my dad has this old Vivitar 75-300 1:4.5-5.6 MC MacroFocusing Zoom No.77410366 fit and I want to fit it onto my Canon EOS 40D. From what I have read if they do have an adapter, it would only work in manual mode, which is fine.

    On the lens mount of the Vivitar it has "P/K" and an orange/red dot. I think that means it's the P/K mount.
    I want to take this on my trip to london on the 18th, any help would be great!

    Thanks
     
  2. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    In my opinion...it's not worth the hassle. A Canon 75-300mm is one of the cheaper lenses in the Canon line up...and I think Tamron has one that is even cheaper.
     
  3. rfosness88

    rfosness88 TPF Noob!

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    I cant spend $100 right now on a lens, $10-$20 for an adapter would be great though...I see a bunch all over ebay, but the descriptions are horrible and idk which to get. What is a T mount? Is that for like telescopes and stuff?
     
  4. rfosness88

    rfosness88 TPF Noob!

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    so im wondering if anyone knows what mount the lens is using, and what adapter i need to buy?

    Thanks
     
  5. gryphonslair99

    gryphonslair99 Been spending a lot of time on here!

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  6. Mgw189

    Mgw189 TPF Noob!

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    The adapters often dont work that well with this to be honest. I purchased one of these adapters for my Sony camera and the images do not come out anywhere near sharp.
     
  7. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    Sorry, I'm not sure which adapter you would need (*edit* there you go)...but there are a few issues. Firstly, Canon EOS cameras control the lens aperture electronically...which you probably won't be able to do with a cheap adapter. Also, an adapter will move the lens farther away from the camera, which will prevent the lens from focusing at infinity. Some adapters have glass in them, which may allow focus to infinity...but the quality of that glass, on a cheap adapter, will really mess up the image quality.

    You would probably be better off shooting with your 18-55mm lens. Keep the camera steady (use a tripod or support etc) then crop your images afterward.
     
  8. usayit

    usayit No longer a newbie, moving up!

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    The Canon EF/EOS flange is shorter than the Pentax K mount. An adapter with the appropriate flange distance is possible without optics.

    As for the electronic EOS aperture control issue, you simply have to remember the following when using the such lenses on EOS bodies:
    * Manual stop down the aperture (make sure the lens allows this, Most do)
    * Shoot the camera in manual mode as the camera. I am unsure if the camera will still TTL meter. If not, you'll need to determine the exposure youself. If so, you'll need to make sure you take an exposure reading while the lens is stopped down.
    * It is imperative you get a good quality adapter that has the flange distance correct.



    btw.. the new Panasonic G1 SLR (the one without mirror box) is an interesting camera for most who have collected (accumulated) old lenses over the years. The flange distance is so short that almost any manual lens can be adapted to it.
     
  9. Dwig

    Dwig TPF Noob!

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    T-mount is an old mount style where the mount was interchangeable allowing you to use different mounts on the lens allowing it to fit different cameras. True T-mounts have been extinct for 40 some odd years now having been replaced in the early '60s with the T2-mounts. T2-mounts are interchangeable with T-mounts and add the ability to loosen 3 screws to align the top of the lens with the top of the body. All T-mount lenses require either a T-mount or T2-mount camera mount. These are usually incorrectly called an "adapter" though they don't adapt anything; they are a removable mount. Today, its only use is for telescope mounts and a few odd camera accessories (slide duplicators, microscope adapters, ...) left over from "olden days".

    Here's a short list of the more common antique mounting systems:

    T-mount, T2-mount: no difference in the lens, only the rotational difference in the mount. These lenses are either real manual aperture (it doesn't automatically close when the shutter fires and reopen after the exposure) or pre-set (also not auto-diaphram but you have an open/close ring in addition to the f/stop ring). These mounts screw onto the lens.

    YS-mount: a scarce old auto-diaphram update on the T/T2-mount system; same thread.

    T-4: a Soligor and Vivitar exclusive. These mounts used bayonet fittings, breechlock style like the old Canon FL/FD mount, and carriy full auto-diaphram and meter coupling. Mounts were available for most '60s and early '70s vintage cameras.

    TX: and update to the T-4 mount that added some additional mounts for newer camra models that were incompatible with the older T-4 system. Many of the TX mounts were identical to the T-4 version. All T-4 mounts fit any TX lens but one some of the TX mounts will fit T-4 lenses. More cameras from the '70s, like the Pentax bayonet models, were added

    Adaptall: an old Tamron system that used a screw on retaining ring. These have been extinct since the mid to late '60s.

    Adaptall 2: the newer Tamron system that was viable through the '70s. Unfortunately humans are generally verbally lazy and few comments on forums and few eBay-style venders use the proper name for these, generally incorrectly labeling them just "Adaptall" omitting the critical "2". The two systems are not interchangeable. Mounts were available for most '60s and '70s vintage models but not for mounts introduced more recently (e.g. Minolta Maxxum, now Sony, and Canon EOS).
     
    Last edited: Apr 7, 2009
  10. rfosness88

    rfosness88 TPF Noob!

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    sounds good thanks for all the info guys!!
     
  11. rfosness88

    rfosness88 TPF Noob!

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    alright, thanks!!
     
  12. usayit

    usayit No longer a newbie, moving up!

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    If the mount has p/k written on it... then it is a K-mount pentax not an Adaptall or T-mount.

    [EDIT] OP, post a picture of the lens and mount... it is easier to make sure we are all on the same page
     

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