Optical Zoom

Discussion in 'Photography Beginners' Forum' started by digitalrightnow, Sep 5, 2006.

  1. digitalrightnow

    digitalrightnow TPF Noob!

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    What exactly is the optical zoom feature for and how do I use it? Is it much different in digital photography? I understand it has something to do with focus. Could someone please elaborate?
     
  2. ksmattfish

    ksmattfish Now 100% DC - not as cool as I once was, but still

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    Optical zoom is the actual zoom capabilities of the lens, and maintains full resolution. Digital zoom is achieved by cropping the image with software, and reduces resolution. You can achieve almost unlimited digital zoom with graphics editing software, so as a camera feature it's not as valuable as the advertisements might suggest.
     
  3. digitalrightnow

    digitalrightnow TPF Noob!

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    So basically you just use it to zoom in on an object to make it appear closer?
     
  4. forceflow1049

    forceflow1049 TPF Noob!

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    It works the same way a zoom lens works on any SLR. So yes, zoom in to get closer.
     
  5. ksmattfish

    ksmattfish Now 100% DC - not as cool as I once was, but still

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    Pretty much. Increasing the lens focal length increases magnification, and reduces angle of view. Decreasing focal length decreases magnification, and increases angle of view.
     
  6. digitalrightnow

    digitalrightnow TPF Noob!

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    So I just turn the lens and watch the object I am photographing get closer in the view finder?
     
  7. ksmattfish

    ksmattfish Now 100% DC - not as cool as I once was, but still

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    Unless you are turning it the other way, then it would get smaller. ;)
     
  8. digitalrightnow

    digitalrightnow TPF Noob!

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    How do you know when you are turning the lens the right way to make sure that the object will appear closer? Also, the vice versa?
     
  9. forceflow1049

    forceflow1049 TPF Noob!

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    I'm not sure what you are asking? Look through the viewfinder of your camera as you turn the lens. You will see things getting closer and farther away.
     
  10. digitalrightnow

    digitalrightnow TPF Noob!

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    So it's pretty well obvious. You can see it in the viewfinder?
     
  11. forceflow1049

    forceflow1049 TPF Noob!

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    Yes, you will see exactly what is happening. What kind of camera is this?
     
  12. digitalrightnow

    digitalrightnow TPF Noob!

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    It's a HP Photosmart R927 Digital Camera
     

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