Noob quextion on a 100-300mm lens

Discussion in 'Beyond the Basics' started by redneckdan, Dec 23, 2005.

  1. redneckdan

    redneckdan TPF Noob!

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    I'm just getting started in photography. I have a pentax K1000 and a new Vivitar 100-300mm zoom lens. i've never used a zoom lens before on a SLR. I noticed there is an f-stop ring and you can turn the outer barrel to focus, how do I adjust between 100-300mm zoom? Is the zoom integral with the focus, ie the farther the focus the more zoom? thanks.
     
  2. Big Mike

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

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    Welcome to the forum.

    It's probably a push-pull zoom.
     
  3. redneckdan

    redneckdan TPF Noob!

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    Um, how do I use the zoom on a push-pull lens?
     
  4. stingray

    stingray TPF Noob!

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    you push and pull... hold the lens somewhere just before the zoom ring and push it away from you and it will zoom. Rather than being threaded and zooming with a ring you just manually push it in or out.
     
  5. Unimaxium

    Unimaxium TPF Noob!

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    You adjust the zoom by one of two ways, depending on how your particular lens works:
    1) older lenses use a push-pull action, in which you zoom by grabbing the focusing ring and sliding it towards or away from you along the lens barrel
    2) generally newer lenses zoom by turning a ring that is very similar to (but separate from) the focusing ring. To zoom, you simply turn this ring and not the focusing one.

    Since you've got a lens on an older camera (K1000 -- great cam), chances are your vivitar lens uses the push-pull action. So try grabbing the focusing ring and pushing it or pulling it to zoom.
     
  6. redneckdan

    redneckdan TPF Noob!

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    yep, thats how it works, now I feel like an idiot.
     

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