pentax k-mount adapter

Discussion in 'Pentax Accessories' started by iPhoto17, Apr 15, 2012.

  1. iPhoto17

    iPhoto17 TPF Noob!

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    to use my lenses i have for my pentax on my nikon the guy at wolf photo told me about the k-mount adapter.

    do i need one for each lens or is it one size fits all?


     
  2. Boyun

    Boyun TPF Noob!

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    The adapter will have a corrective lens in it, because the flange-focal-distance of a Pentax K (45.46mm) is smaller than Nikon F-mount (46.50mm). If the Pentax lens you have does not interfere with the corrective lens in the adapter, then, in general, you can use it on all the Pentax K lens and Nikon DSLR body combination.
     
  3. iPhoto17

    iPhoto17 TPF Noob!

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    cool, you think you can send me a link to one of these? i searched myself and came up with a whole bunch of different things, thanks
     
  4. Boyun

    Boyun TPF Noob!

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    In my opinion Pentax lens on a Nikon body is not a good combination, however
    you can do it:

    Pentax PK Lens to Nikon DSLR Body Mount Adapter Ring | eBay

    Y
    ou will certainly lose camera body function.
     
    Last edited: Apr 15, 2012
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  5. STM

    STM TPF Noob!

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    Although I can understand your desire to use some existing lenses, in my opinion what you will lose in so doing so overshadows any possible gains.
     
  6. Boyun

    Boyun TPF Noob!

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    Any mirrorless camera bodies (NEX, Micro 4/3 Panasonic, Micro 4/3 Oylmpus...) are good candidates for Pentax lenses with an aperture ring.
     
  7. iPhoto17

    iPhoto17 TPF Noob!

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    what do i lose out of this besides auto-focus? i can care less about that, i actually prefer shooting with my k1000 but the d3000 is cheaper to shoot with
     
  8. Boyun

    Boyun TPF Noob!

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    You will have to shoot with "M". and no light meter. Olympus E-P1 is not expensive, and has image stableizer. Don't take my word for it try it out, or ask someone who has.

    http://www.amazon.com/Olympus-Thirds-Interchangeable-Digital-Body/dp/B002CGSYKI

    http://www.amazon.com/OLYMPUS-26285...3?s=electronics&ie=UTF8&qid=1334573857&sr=1-3
     
    Last edited: Apr 16, 2012
  9. enzodm

    enzodm No longer a newbie, moving up!

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    adapter with lens also changes slightly the focal length, in addition to decrease image quality. Actually, among current dSLRs, Nikon is the only one that needs optical adapters to mount many old lenses.
     
  10. usayit

    usayit No longer a newbie, moving up!

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    The problem with the E-P1 is that it does not support the option of EVF and manual focusing on the rear LCD can be a bit uncomfortable. Once you figure in a pen body with EVF attachment it is no longer inexpensive. Rarely will you find a used EVF attachment for sale used.. because they are compatible even with the newest of Pen cameras.

    There are other options:

    * Early Panasonic Micro 4/3. inexpensive, adapters galor, and internal EVF. Con: No Image stabilization and older sensor. 2x crop so your 50mm is FOV of 100mm.
    * Early Pentax DSLR. *ist or similar. Can be found cheap. Because they are equipped with a K-mount (crippled), you get more functionality than to another camera. No adapters required. Crop is not as bad as micro 4/3. Con: Again... older sensor, dated camera UI, pent-mirror instead of penta-prism view finder.

    I agree with the above regarding the adapter... you are adding another cheap glass element in the mix. yuk! If you go the micro 43, they do have an adapter that has an additional ring to open and stop down the lenses. I found it quite convenient for critical focus. Fotodiox is about the only one that makes them. There are numerous cheap adapters out there that do not have this stop down ring, they work fine too.
     
  11. enzodm

    enzodm No longer a newbie, moving up!

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    + any Canon with a cheap adapter, no need for extra glass.
     
  12. Boyun

    Boyun TPF Noob!

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    I agree with you with the evf, but not everyone wants a evf. Take a look at 5D mkII, many spend hundreds of dollars to buy a LCD scope to avoid to look through viewfinder. I like a EVF that is why I bought a NEX-7. You are wrong about the manual focus, the only way to focus the Pentax lens is the old way, by the lens.
     

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