Please - Definition/Requirements of a "Prime" Lens

Discussion in 'Digital Photography' started by sblasl, Jun 14, 2007.

  1. sblasl macrumors 6502a

    sblasl

    Joined:
    Apr 25, 2004
    Location:
    Heber Springs, AR
    #1
    OK, I am not bashful. I'll ask the question that I am sure others want to ask.

    Would the members here please provide the definition/requirements of a "prime" lens? (or is it lense)?

    Thanks,

    Scott:eek:
     
  2. gauchogolfer macrumors 603

    gauchogolfer

    Joined:
    Jan 28, 2005
    Location:
    American Riviera
    #2
    A prime lens is simply one that does not zoom (or tilt). Basically the only movement of the optics is for focusing.
     
  3. Lovesong macrumors 65816

    Lovesong

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    Location:
    Stuck beween a rock and a hard place
    #3
    For some odd reason I aways thought the 24mm TSE (along with the 45 and 90) by canon were considered primes.:confused:
     
  4. gauchogolfer macrumors 603

    gauchogolfer

    Joined:
    Jan 28, 2005
    Location:
    American Riviera
    #4
    Maybe? I just added in the tilt comment on a hunch. My original post just said that non-zooming lenses were primes.
     
  5. Grimace macrumors 68040

    Grimace

    Joined:
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    Location:
    with Hamburglar.
    #5
    yeah, tilt-shift lenses are considered primes.
     
  6. milozauckerman macrumors 6502

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    Jun 25, 2005
  7. jeffzoom91 macrumors regular

    jeffzoom91

    Joined:
    Jul 25, 2005
    Location:
    Florida
    #7
    simple definition: I turned the wheel and nothing happened.
     
  8. Lovesong macrumors 65816

    Lovesong

    Joined:
    Sep 15, 2006
    Location:
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    #8
    Uhhh... that can't be good.:eek:
    Is the focusing mechanism broken....since nothing happens and all. :rolleyes:
     
  9. shieldyoureyes macrumors 6502

    shieldyoureyes

    Joined:
    Nov 1, 2005
    Location:
    Uppsala, Sweden
    #9
    Yep, tilt-shifts are also primes.

    A prime is a lens that doesn't zoom (only have one focal length)

    The most common ones you will see are 28mm, 35mm, 50mm, 85mm and other varying lengths all the way up to 500mm and above.

    They generally produce sharper images than their zoom counter parts and have wider apertures, which make them much more suitable for shooting in very low light.
     
  10. valiar macrumors regular

    Joined:
    Mar 14, 2006
    Location:
    Washington, DC
    #10
    Lense if you live in UK, I guess :)
    But yes, as has been posted above - a prime lens is a lens with fixed focal length. As opposed to a zoom lens (also called a transfocator).
     

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