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Thread: Help~! A70's technical term

  1. #1

    Question Help~! A70's technical term

    What does this mean?

    5.4-16.2mm 1:2.8-4.8 (on the lens)

  2. #2
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    that means, your focal length of your camera is 5.4 to 16.2mm, and the aperture is f/2.8 at 5.4 focal length, all the way to f/4.8 at 16.2mm focal length.

  3. #3

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    Quote Originally Posted by sehsuan
    that means, your focal length of your camera is 5.4 to 16.2mm, and the aperture is f/2.8 at 5.4 focal length, all the way to f/4.8 at 16.2mm focal length.
    But how come in manual mode, i can set the aperture to f/8.0??

  4. #4

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    Quote Originally Posted by Octopuz
    But how come in manual mode, i can set the aperture to f/8.0??
    that's because what is inscribed on the lens itself is the maximum aperture. f/8 is the minimum aperture you can set on the lens.

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    because f/8 is a smaller aperture than those indicated on the camera.

    the aperture ratings on a lens/camera only states the largest possible settings, that's all. there's no point comparing the minimum aperture unless it's for macro purposes, even then... you can't get much light through a small aperture for focussing purposes.

  6. #6

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    Quote Originally Posted by Octopuz
    But how come in manual mode, i can set the aperture to f/8.0??
    the f2.8-4.8 is the max aperture size usuable at the focal length which sehsuan had pointed out, at all focal length you can use aperture lesser then those indicator values (i.e f8)

    Note: lower f value denotes bigger apperture size.

  7. #7

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    oh~! Now I undestand liao

    Thanks guys

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